21072240

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:176

約数の個数: 240

約数和(自身を含む): 83798208

約数和(自身を除く): 62725968

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 37, 40, 42, 45, 48, 56, 60, 63, 70, 72, 74, 80, 84, 90, 105, 111, 112, 113, 120, 126, 140, 144, 148, 168, 180, 185, 210, 222, 226, 240, 252, 259, 280, 296, 315, 333, 336, 339, 360, 370, 420, 444, 452, 504, 518, 555, 560, 565, 592, 630, 666, 678, 720, 740, 777, 791, 840, 888, 904, 1008, 1017, 1036, 1110, 1130, 1260, 1295, 1332, 1356, 1480, 1554, 1582, 1665, 1680, 1695, 1776, 1808, 2034, 2072, 2220, 2260, 2331, 2373, 2520, 2590, 2664, 2712, 2960, 3108, 3164, 3330, 3390, 3885, 3955, 4068, 4144, 4181, 4440, 4520, 4662, 4746, 5040, 5085, 5180, 5328, 5424, 6216, 6328, 6660, 6780, 7119, 7770, 7910, 8136, 8362, 8880, 9040, 9324, 9492, 10170, 10360, 11655, 11865, 12432, 12543, 12656, 13320, 13560, 14238, 15540, 15820, 16272, 16724, 18648, 18984, 20340, 20720, 20905, 23310, 23730, 25086, 26640, 27120, 28476, 29267, 31080, 31640, 33448, 35595, 37296, 37629, 37968, 40680, 41810, 46620, 47460, 50172, 56952, 58534, 62160, 62715, 63280, 66896, 71190, 75258, 81360, 83620, 87801, 93240, 94920, 100344, 113904, 117068, 125430, 142380, 146335, 150516, 167240, 175602, 186480, 188145, 189840, 200688, 234136, 250860, 263403, 284760, 292670, 301032, 334480, 351204, 376290, 439005, 468272, 501720, 526806, 569520, 585340, 602064, 702408, 752580, 878010, 1003440, 1053612, 1170680, 1317015, 1404816, 1505160, 1756020, 2107224, 2341360, 2634030, 3010320, 3512040, 4214448, 5268060, 7024080, 10536120, 21072240]

約数ペア:

[(1, 21072240), (2, 10536120), (3, 7024080), (4, 5268060), (5, 4214448), (6, 3512040), (7, 3010320), (8, 2634030), (9, 2341360), (10, 2107224), (12, 1756020), (14, 1505160), (15, 1404816), (16, 1317015), (18, 1170680), (20, 1053612), (21, 1003440), (24, 878010), (28, 752580), (30, 702408), (35, 602064), (36, 585340), (37, 569520), (40, 526806), (42, 501720), (45, 468272), (48, 439005), (56, 376290), (60, 351204), (63, 334480), (70, 301032), (72, 292670), (74, 284760), (80, 263403), (84, 250860), (90, 234136), (105, 200688), (111, 189840), (112, 188145), (113, 186480), (120, 175602), (126, 167240), (140, 150516), (144, 146335), (148, 142380), (168, 125430), (180, 117068), (185, 113904), (210, 100344), (222, 94920), (226, 93240), (240, 87801), (252, 83620), (259, 81360), (280, 75258), (296, 71190), (315, 66896), (333, 63280), (336, 62715), (339, 62160), (360, 58534), (370, 56952), (420, 50172), (444, 47460), (452, 46620), (504, 41810), (518, 40680), (555, 37968), (560, 37629), (565, 37296), (592, 35595), (630, 33448), (666, 31640), (678, 31080), (720, 29267), (740, 28476), (777, 27120), (791, 26640), (840, 25086), (888, 23730), (904, 23310), (1008, 20905), (1017, 20720), (1036, 20340), (1110, 18984), (1130, 18648), (1260, 16724), (1295, 16272), (1332, 15820), (1356, 15540), (1480, 14238), (1554, 13560), (1582, 13320), (1665, 12656), (1680, 12543), (1695, 12432), (1776, 11865), (1808, 11655), (2034, 10360), (2072, 10170), (2220, 9492), (2260, 9324), (2331, 9040), (2373, 8880), (2520, 8362), (2590, 8136), (2664, 7910), (2712, 7770), (2960, 7119), (3108, 6780), (3164, 6660), (3330, 6328), (3390, 6216), (3885, 5424), (3955, 5328), (4068, 5180), (4144, 5085), (4181, 5040), (4440, 4746), (4520, 4662)]