64880440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{85369}}^1$

素因数の和:85399

約数の個数: 32

約数和(自身を含む): 153666000

約数和(自身を除く): 88785560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 85369, 170738, 341476, 426845, 682952, 853690, 1622011, 1707380, 3244022, 3414760, 6488044, 8110055, 12976088, 16220110, 32440220, 64880440]

約数ペア:

[(1, 64880440), (2, 32440220), (4, 16220110), (5, 12976088), (8, 8110055), (10, 6488044), (19, 3414760), (20, 3244022), (38, 1707380), (40, 1622011), (76, 853690), (95, 682952), (152, 426845), (190, 341476), (380, 170738), (760, 85369)]