21500325

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 51532416

約数和(自身を除く): 30032091

約数列:

[1, 3, 5, 7, 9, 11, 15, 17, 21, 25, 33, 35, 45, 51, 55, 63, 73, 75, 77, 85, 99, 105, 119, 153, 165, 175, 187, 219, 225, 231, 255, 275, 315, 357, 365, 385, 425, 495, 511, 525, 561, 595, 657, 693, 765, 803, 825, 935, 1071, 1095, 1155, 1241, 1275, 1309, 1533, 1575, 1683, 1785, 1825, 1925, 2409, 2475, 2555, 2805, 2975, 3285, 3465, 3723, 3825, 3927, 4015, 4599, 4675, 5355, 5475, 5621, 5775, 6205, 6545, 7227, 7665, 8415, 8687, 8925, 11169, 11781, 12045, 12775, 13651, 14025, 16425, 16863, 17325, 18615, 19635, 20075, 22995, 26061, 26775, 28105, 31025, 32725, 36135, 38325, 40953, 42075, 43435, 50589, 55845, 58905, 60225, 68255, 78183, 84315, 93075, 95557, 98175, 114975, 122859, 130305, 140525, 180675, 204765, 217175, 252945, 279225, 286671, 294525, 341275, 390915, 421575, 477785, 614295, 651525, 860013, 1023825, 1264725, 1433355, 1954575, 2388925, 3071475, 4300065, 7166775, 21500325]

約数ペア:

[(1, 21500325), (3, 7166775), (5, 4300065), (7, 3071475), (9, 2388925), (11, 1954575), (15, 1433355), (17, 1264725), (21, 1023825), (25, 860013), (33, 651525), (35, 614295), (45, 477785), (51, 421575), (55, 390915), (63, 341275), (73, 294525), (75, 286671), (77, 279225), (85, 252945), (99, 217175), (105, 204765), (119, 180675), (153, 140525), (165, 130305), (175, 122859), (187, 114975), (219, 98175), (225, 95557), (231, 93075), (255, 84315), (275, 78183), (315, 68255), (357, 60225), (365, 58905), (385, 55845), (425, 50589), (495, 43435), (511, 42075), (525, 40953), (561, 38325), (595, 36135), (657, 32725), (693, 31025), (765, 28105), (803, 26775), (825, 26061), (935, 22995), (1071, 20075), (1095, 19635), (1155, 18615), (1241, 17325), (1275, 16863), (1309, 16425), (1533, 14025), (1575, 13651), (1683, 12775), (1785, 12045), (1825, 11781), (1925, 11169), (2409, 8925), (2475, 8687), (2555, 8415), (2805, 7665), (2975, 7227), (3285, 6545), (3465, 6205), (3723, 5775), (3825, 5621), (3927, 5475), (4015, 5355), (4599, 4675)]