21277620

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1$

素因数の和:471

約数の個数: 192

約数和(自身を含む): 81661440

約数和(自身を除く): 60383820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 84, 90, 91, 105, 108, 117, 126, 130, 135, 140, 156, 180, 182, 189, 195, 210, 234, 252, 260, 270, 273, 315, 351, 364, 378, 390, 420, 433, 455, 468, 540, 546, 585, 630, 702, 756, 780, 819, 866, 910, 945, 1092, 1170, 1260, 1299, 1365, 1404, 1638, 1732, 1755, 1820, 1890, 2165, 2340, 2457, 2598, 2730, 3031, 3276, 3510, 3780, 3897, 4095, 4330, 4914, 5196, 5460, 5629, 6062, 6495, 7020, 7794, 8190, 8660, 9093, 9828, 11258, 11691, 12124, 12285, 12990, 15155, 15588, 16380, 16887, 18186, 19485, 22516, 23382, 24570, 25980, 27279, 28145, 30310, 33774, 36372, 38970, 39403, 45465, 46764, 49140, 50661, 54558, 56290, 58455, 60620, 67548, 77940, 78806, 81837, 84435, 90930, 101322, 109116, 112580, 116910, 118209, 136395, 151983, 157612, 163674, 168870, 181860, 197015, 202644, 233820, 236418, 253305, 272790, 303966, 327348, 337740, 354627, 394030, 409185, 472836, 506610, 545580, 591045, 607932, 709254, 759915, 788060, 818370, 1013220, 1063881, 1182090, 1418508, 1519830, 1636740, 1773135, 2127762, 2364180, 3039660, 3546270, 4255524, 5319405, 7092540, 10638810, 21277620]

約数ペア:

[(1, 21277620), (2, 10638810), (3, 7092540), (4, 5319405), (5, 4255524), (6, 3546270), (7, 3039660), (9, 2364180), (10, 2127762), (12, 1773135), (13, 1636740), (14, 1519830), (15, 1418508), (18, 1182090), (20, 1063881), (21, 1013220), (26, 818370), (27, 788060), (28, 759915), (30, 709254), (35, 607932), (36, 591045), (39, 545580), (42, 506610), (45, 472836), (52, 409185), (54, 394030), (60, 354627), (63, 337740), (65, 327348), (70, 303966), (78, 272790), (84, 253305), (90, 236418), (91, 233820), (105, 202644), (108, 197015), (117, 181860), (126, 168870), (130, 163674), (135, 157612), (140, 151983), (156, 136395), (180, 118209), (182, 116910), (189, 112580), (195, 109116), (210, 101322), (234, 90930), (252, 84435), (260, 81837), (270, 78806), (273, 77940), (315, 67548), (351, 60620), (364, 58455), (378, 56290), (390, 54558), (420, 50661), (433, 49140), (455, 46764), (468, 45465), (540, 39403), (546, 38970), (585, 36372), (630, 33774), (702, 30310), (756, 28145), (780, 27279), (819, 25980), (866, 24570), (910, 23382), (945, 22516), (1092, 19485), (1170, 18186), (1260, 16887), (1299, 16380), (1365, 15588), (1404, 15155), (1638, 12990), (1732, 12285), (1755, 12124), (1820, 11691), (1890, 11258), (2165, 9828), (2340, 9093), (2457, 8660), (2598, 8190), (2730, 7794), (3031, 7020), (3276, 6495), (3510, 6062), (3780, 5629), (3897, 5460), (4095, 5196), (4330, 4914)]