20644260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 192

約数和(自身を含む): 75264000

約数和(自身を除く): 54619740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 19, 20, 21, 26, 28, 30, 35, 38, 39, 42, 52, 57, 60, 65, 70, 76, 78, 84, 91, 95, 105, 114, 130, 133, 140, 156, 182, 190, 195, 199, 210, 228, 247, 260, 266, 273, 285, 364, 380, 390, 398, 399, 420, 455, 494, 532, 546, 570, 597, 665, 741, 780, 796, 798, 910, 988, 995, 1092, 1140, 1194, 1235, 1330, 1365, 1393, 1482, 1596, 1729, 1820, 1990, 1995, 2388, 2470, 2587, 2660, 2730, 2786, 2964, 2985, 3458, 3705, 3781, 3980, 3990, 4179, 4940, 5174, 5187, 5460, 5572, 5970, 6916, 6965, 7410, 7562, 7761, 7980, 8358, 8645, 10348, 10374, 11343, 11940, 12935, 13930, 14820, 15124, 15522, 16716, 17290, 18109, 18905, 20748, 20895, 22686, 25870, 25935, 26467, 27860, 31044, 34580, 36218, 37810, 38805, 41790, 45372, 49153, 51740, 51870, 52934, 54327, 56715, 72436, 75620, 77610, 79401, 83580, 90545, 98306, 103740, 105868, 108654, 113430, 132335, 147459, 155220, 158802, 181090, 196612, 217308, 226860, 245765, 264670, 271635, 294918, 317604, 344071, 362180, 397005, 491530, 529340, 543270, 589836, 688142, 737295, 794010, 983060, 1032213, 1086540, 1376284, 1474590, 1588020, 1720355, 2064426, 2949180, 3440710, 4128852, 5161065, 6881420, 10322130, 20644260]

約数ペア:

[(1, 20644260), (2, 10322130), (3, 6881420), (4, 5161065), (5, 4128852), (6, 3440710), (7, 2949180), (10, 2064426), (12, 1720355), (13, 1588020), (14, 1474590), (15, 1376284), (19, 1086540), (20, 1032213), (21, 983060), (26, 794010), (28, 737295), (30, 688142), (35, 589836), (38, 543270), (39, 529340), (42, 491530), (52, 397005), (57, 362180), (60, 344071), (65, 317604), (70, 294918), (76, 271635), (78, 264670), (84, 245765), (91, 226860), (95, 217308), (105, 196612), (114, 181090), (130, 158802), (133, 155220), (140, 147459), (156, 132335), (182, 113430), (190, 108654), (195, 105868), (199, 103740), (210, 98306), (228, 90545), (247, 83580), (260, 79401), (266, 77610), (273, 75620), (285, 72436), (364, 56715), (380, 54327), (390, 52934), (398, 51870), (399, 51740), (420, 49153), (455, 45372), (494, 41790), (532, 38805), (546, 37810), (570, 36218), (597, 34580), (665, 31044), (741, 27860), (780, 26467), (796, 25935), (798, 25870), (910, 22686), (988, 20895), (995, 20748), (1092, 18905), (1140, 18109), (1194, 17290), (1235, 16716), (1330, 15522), (1365, 15124), (1393, 14820), (1482, 13930), (1596, 12935), (1729, 11940), (1820, 11343), (1990, 10374), (1995, 10348), (2388, 8645), (2470, 8358), (2587, 7980), (2660, 7761), (2730, 7562), (2786, 7410), (2964, 6965), (2985, 6916), (3458, 5970), (3705, 5572), (3781, 5460), (3980, 5187), (3990, 5174), (4179, 4940)]