20617680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{317}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 64353024

約数和(自身を除く): 43735344

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 271, 317, 542, 634, 813, 951, 1084, 1268, 1355, 1585, 1626, 1902, 2168, 2536, 2710, 3170, 3252, 3804, 4065, 4336, 4755, 5072, 5420, 6340, 6504, 7608, 8130, 9510, 10840, 12680, 13008, 15216, 16260, 19020, 21680, 25360, 32520, 38040, 65040, 76080, 85907, 171814, 257721, 343628, 429535, 515442, 687256, 859070, 1030884, 1288605, 1374512, 1718140, 2061768, 2577210, 3436280, 4123536, 5154420, 6872560, 10308840, 20617680]

約数ペア:

[(1, 20617680), (2, 10308840), (3, 6872560), (4, 5154420), (5, 4123536), (6, 3436280), (8, 2577210), (10, 2061768), (12, 1718140), (15, 1374512), (16, 1288605), (20, 1030884), (24, 859070), (30, 687256), (40, 515442), (48, 429535), (60, 343628), (80, 257721), (120, 171814), (240, 85907), (271, 76080), (317, 65040), (542, 38040), (634, 32520), (813, 25360), (951, 21680), (1084, 19020), (1268, 16260), (1355, 15216), (1585, 13008), (1626, 12680), (1902, 10840), (2168, 9510), (2536, 8130), (2710, 7608), (3170, 6504), (3252, 6340), (3804, 5420), (4065, 5072), (4336, 4755)]