278672080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{84961}}^1$

素因数の和:85015

約数の個数: 40

約数和(自身を含む): 663723144

約数和(自身を除く): 385051064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 84961, 169922, 339844, 424805, 679688, 849610, 1359376, 1699220, 3398440, 3483401, 6796880, 6966802, 13933604, 17417005, 27867208, 34834010, 55734416, 69668020, 139336040, 278672080]

約数ペア:

[(1, 278672080), (2, 139336040), (4, 69668020), (5, 55734416), (8, 34834010), (10, 27867208), (16, 17417005), (20, 13933604), (40, 6966802), (41, 6796880), (80, 3483401), (82, 3398440), (164, 1699220), (205, 1359376), (328, 849610), (410, 679688), (656, 424805), (820, 339844), (1640, 169922), (3280, 84961)]