77620040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 179262720

約数和(自身を除く): 101642680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 151, 181, 284, 302, 355, 362, 568, 604, 710, 724, 755, 905, 1208, 1420, 1448, 1510, 1810, 2840, 3020, 3620, 6040, 7240, 10721, 12851, 21442, 25702, 27331, 42884, 51404, 53605, 54662, 64255, 85768, 102808, 107210, 109324, 128510, 136655, 214420, 218648, 257020, 273310, 428840, 514040, 546620, 1093240, 1940501, 3881002, 7762004, 9702505, 15524008, 19405010, 38810020, 77620040]

約数ペア:

[(1, 77620040), (2, 38810020), (4, 19405010), (5, 15524008), (8, 9702505), (10, 7762004), (20, 3881002), (40, 1940501), (71, 1093240), (142, 546620), (151, 514040), (181, 428840), (284, 273310), (302, 257020), (355, 218648), (362, 214420), (568, 136655), (604, 128510), (710, 109324), (724, 107210), (755, 102808), (905, 85768), (1208, 64255), (1420, 54662), (1448, 53605), (1510, 51404), (1810, 42884), (2840, 27331), (3020, 25702), (3620, 21442), (6040, 12851), (7240, 10721)]