21519225

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1051}}^1$

素因数の和:1087

約数の個数: 72

約数和(自身を含む): 47483072

約数和(自身を除く): 25963847

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 35, 39, 45, 63, 65, 75, 91, 105, 117, 175, 195, 225, 273, 315, 325, 455, 525, 585, 819, 975, 1051, 1365, 1575, 2275, 2925, 3153, 4095, 5255, 6825, 7357, 9459, 13663, 15765, 20475, 22071, 26275, 36785, 40989, 47295, 66213, 68315, 78825, 95641, 110355, 122967, 183925, 204945, 236475, 286923, 331065, 341575, 478205, 551775, 614835, 860769, 1024725, 1434615, 1655325, 2391025, 3074175, 4303845, 7173075, 21519225]

約数ペア:

[(1, 21519225), (3, 7173075), (5, 4303845), (7, 3074175), (9, 2391025), (13, 1655325), (15, 1434615), (21, 1024725), (25, 860769), (35, 614835), (39, 551775), (45, 478205), (63, 341575), (65, 331065), (75, 286923), (91, 236475), (105, 204945), (117, 183925), (175, 122967), (195, 110355), (225, 95641), (273, 78825), (315, 68315), (325, 66213), (455, 47295), (525, 40989), (585, 36785), (819, 26275), (975, 22071), (1051, 20475), (1365, 15765), (1575, 13663), (2275, 9459), (2925, 7357), (3153, 6825), (4095, 5255)]