21259680

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3407}}^1$

素因数の和:3438

約数の個数: 96

約数和(自身を含む): 72140544

約数和(自身を除く): 50880864

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 3407, 6240, 6814, 10221, 13628, 17035, 20442, 27256, 34070, 40884, 44291, 51105, 54512, 68140, 81768, 88582, 102210, 109024, 132873, 136280, 163536, 177164, 204420, 221455, 265746, 272560, 327072, 354328, 408840, 442910, 531492, 545120, 664365, 708656, 817680, 885820, 1062984, 1328730, 1417312, 1635360, 1771640, 2125968, 2657460, 3543280, 4251936, 5314920, 7086560, 10629840, 21259680]

約数ペア:

[(1, 21259680), (2, 10629840), (3, 7086560), (4, 5314920), (5, 4251936), (6, 3543280), (8, 2657460), (10, 2125968), (12, 1771640), (13, 1635360), (15, 1417312), (16, 1328730), (20, 1062984), (24, 885820), (26, 817680), (30, 708656), (32, 664365), (39, 545120), (40, 531492), (48, 442910), (52, 408840), (60, 354328), (65, 327072), (78, 272560), (80, 265746), (96, 221455), (104, 204420), (120, 177164), (130, 163536), (156, 136280), (160, 132873), (195, 109024), (208, 102210), (240, 88582), (260, 81768), (312, 68140), (390, 54512), (416, 51105), (480, 44291), (520, 40884), (624, 34070), (780, 27256), (1040, 20442), (1248, 17035), (1560, 13628), (2080, 10221), (3120, 6814), (3407, 6240)]