31307640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 256

約数和(自身を含む): 119992320

約数和(自身を除く): 88684680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 47, 52, 56, 60, 61, 65, 70, 78, 84, 91, 94, 104, 105, 120, 122, 130, 140, 141, 156, 168, 182, 183, 188, 195, 210, 235, 244, 260, 273, 280, 282, 305, 312, 329, 364, 366, 376, 390, 420, 427, 455, 470, 488, 520, 546, 564, 610, 611, 658, 705, 728, 732, 780, 793, 840, 854, 910, 915, 940, 987, 1092, 1128, 1220, 1222, 1281, 1316, 1365, 1410, 1464, 1560, 1586, 1645, 1708, 1820, 1830, 1833, 1880, 1974, 2135, 2184, 2379, 2440, 2444, 2562, 2632, 2730, 2820, 2867, 3055, 3172, 3290, 3416, 3640, 3660, 3666, 3948, 3965, 4270, 4277, 4758, 4888, 4935, 5124, 5460, 5551, 5640, 5734, 6110, 6344, 6405, 6580, 7320, 7332, 7896, 7930, 8540, 8554, 8601, 9165, 9516, 9870, 10248, 10920, 11102, 11468, 11895, 12220, 12810, 12831, 13160, 14335, 14664, 15860, 16653, 17080, 17108, 17202, 18330, 19032, 19740, 20069, 21385, 22204, 22936, 23790, 24440, 25620, 25662, 27755, 28670, 31720, 33306, 34216, 34404, 36660, 37271, 39480, 40138, 42770, 43005, 44408, 47580, 51240, 51324, 55510, 57340, 60207, 64155, 66612, 68808, 73320, 74542, 80276, 83265, 85540, 86010, 95160, 100345, 102648, 111020, 111813, 114680, 120414, 128310, 133224, 149084, 160552, 166530, 171080, 172020, 186355, 200690, 222040, 223626, 240828, 256620, 260897, 298168, 301035, 333060, 344040, 372710, 401380, 447252, 481656, 513240, 521794, 559065, 602070, 666120, 745420, 782691, 802760, 894504, 1043588, 1118130, 1204140, 1304485, 1490840, 1565382, 2087176, 2236260, 2408280, 2608970, 3130764, 3913455, 4472520, 5217940, 6261528, 7826910, 10435880, 15653820, 31307640]

約数ペア:

[(1, 31307640), (2, 15653820), (3, 10435880), (4, 7826910), (5, 6261528), (6, 5217940), (7, 4472520), (8, 3913455), (10, 3130764), (12, 2608970), (13, 2408280), (14, 2236260), (15, 2087176), (20, 1565382), (21, 1490840), (24, 1304485), (26, 1204140), (28, 1118130), (30, 1043588), (35, 894504), (39, 802760), (40, 782691), (42, 745420), (47, 666120), (52, 602070), (56, 559065), (60, 521794), (61, 513240), (65, 481656), (70, 447252), (78, 401380), (84, 372710), (91, 344040), (94, 333060), (104, 301035), (105, 298168), (120, 260897), (122, 256620), (130, 240828), (140, 223626), (141, 222040), (156, 200690), (168, 186355), (182, 172020), (183, 171080), (188, 166530), (195, 160552), (210, 149084), (235, 133224), (244, 128310), (260, 120414), (273, 114680), (280, 111813), (282, 111020), (305, 102648), (312, 100345), (329, 95160), (364, 86010), (366, 85540), (376, 83265), (390, 80276), (420, 74542), (427, 73320), (455, 68808), (470, 66612), (488, 64155), (520, 60207), (546, 57340), (564, 55510), (610, 51324), (611, 51240), (658, 47580), (705, 44408), (728, 43005), (732, 42770), (780, 40138), (793, 39480), (840, 37271), (854, 36660), (910, 34404), (915, 34216), (940, 33306), (987, 31720), (1092, 28670), (1128, 27755), (1220, 25662), (1222, 25620), (1281, 24440), (1316, 23790), (1365, 22936), (1410, 22204), (1464, 21385), (1560, 20069), (1586, 19740), (1645, 19032), (1708, 18330), (1820, 17202), (1830, 17108), (1833, 17080), (1880, 16653), (1974, 15860), (2135, 14664), (2184, 14335), (2379, 13160), (2440, 12831), (2444, 12810), (2562, 12220), (2632, 11895), (2730, 11468), (2820, 11102), (2867, 10920), (3055, 10248), (3172, 9870), (3290, 9516), (3416, 9165), (3640, 8601), (3660, 8554), (3666, 8540), (3948, 7930), (3965, 7896), (4270, 7332), (4277, 7320), (4758, 6580), (4888, 6405), (4935, 6344), (5124, 6110), (5460, 5734), (5551, 5640)]