20737680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1217}}^1$

素因数の和:1304

約数の個数: 80

約数和(自身を含む): 65245824

約数和(自身を除く): 44508144

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1217, 1420, 1704, 2130, 2434, 2840, 3408, 3651, 4260, 4868, 5680, 6085, 7302, 8520, 9736, 12170, 14604, 17040, 18255, 19472, 24340, 29208, 36510, 48680, 58416, 73020, 86407, 97360, 146040, 172814, 259221, 292080, 345628, 432035, 518442, 691256, 864070, 1036884, 1296105, 1382512, 1728140, 2073768, 2592210, 3456280, 4147536, 5184420, 6912560, 10368840, 20737680]

約数ペア:

[(1, 20737680), (2, 10368840), (3, 6912560), (4, 5184420), (5, 4147536), (6, 3456280), (8, 2592210), (10, 2073768), (12, 1728140), (15, 1382512), (16, 1296105), (20, 1036884), (24, 864070), (30, 691256), (40, 518442), (48, 432035), (60, 345628), (71, 292080), (80, 259221), (120, 172814), (142, 146040), (213, 97360), (240, 86407), (284, 73020), (355, 58416), (426, 48680), (568, 36510), (710, 29208), (852, 24340), (1065, 19472), (1136, 18255), (1217, 17040), (1420, 14604), (1704, 12170), (2130, 9736), (2434, 8520), (2840, 7302), (3408, 6085), (3651, 5680), (4260, 4868)]