6978920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13421}}^1$

素因数の和:13445

約数の個数: 32

約数和(自身を含む): 16911720

約数和(自身を除く): 9932800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 13421, 26842, 53684, 67105, 107368, 134210, 174473, 268420, 348946, 536840, 697892, 872365, 1395784, 1744730, 3489460, 6978920]

約数ペア:

[(1, 6978920), (2, 3489460), (4, 1744730), (5, 1395784), (8, 872365), (10, 697892), (13, 536840), (20, 348946), (26, 268420), (40, 174473), (52, 134210), (65, 107368), (104, 67105), (130, 53684), (260, 26842), (520, 13421)]