21503040

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1723}}^1$

素因数の和:1756

約数の個数: 112

約数和(自身を含む): 73566528

約数和(自身を除く): 52063488

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, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1723, 2080, 2496, 3120, 3446, 4160, 5169, 6240, 6892, 8615, 10338, 12480, 13784, 17230, 20676, 22399, 25845, 27568, 34460, 41352, 44798, 51690, 55136, 67197, 68920, 82704, 89596, 103380, 110272, 111995, 134394, 137840, 165408, 179192, 206760, 223990, 268788, 275680, 330816, 335985, 358384, 413520, 447980, 537576, 551360, 671970, 716768, 827040, 895960, 1075152, 1343940, 1433536, 1654080, 1791920, 2150304, 2687880, 3583840, 4300608, 5375760, 7167680, 10751520, 21503040]

約数ペア:

[(1, 21503040), (2, 10751520), (3, 7167680), (4, 5375760), (5, 4300608), (6, 3583840), (8, 2687880), (10, 2150304), (12, 1791920), (13, 1654080), (15, 1433536), (16, 1343940), (20, 1075152), (24, 895960), (26, 827040), (30, 716768), (32, 671970), (39, 551360), (40, 537576), (48, 447980), (52, 413520), (60, 358384), (64, 335985), (65, 330816), (78, 275680), (80, 268788), (96, 223990), (104, 206760), (120, 179192), (130, 165408), (156, 137840), (160, 134394), (192, 111995), (195, 110272), (208, 103380), (240, 89596), (260, 82704), (312, 68920), (320, 67197), (390, 55136), (416, 51690), (480, 44798), (520, 41352), (624, 34460), (780, 27568), (832, 25845), (960, 22399), (1040, 20676), (1248, 17230), (1560, 13784), (1723, 12480), (2080, 10338), (2496, 8615), (3120, 6892), (3446, 6240), (4160, 5169)]