78339920

素因数分解:

$2^4\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1721}}^1$

素因数の和:2303

約数の個数: 40

約数和(自身を含む): 182566440

約数和(自身を除く): 104226520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 569, 1138, 1721, 2276, 2845, 3442, 4552, 5690, 6884, 8605, 9104, 11380, 13768, 17210, 22760, 27536, 34420, 45520, 68840, 137680, 979249, 1958498, 3916996, 4896245, 7833992, 9792490, 15667984, 19584980, 39169960, 78339920]

約数ペア:

[(1, 78339920), (2, 39169960), (4, 19584980), (5, 15667984), (8, 9792490), (10, 7833992), (16, 4896245), (20, 3916996), (40, 1958498), (80, 979249), (569, 137680), (1138, 68840), (1721, 45520), (2276, 34420), (2845, 27536), (3442, 22760), (4552, 17210), (5690, 13768), (6884, 11380), (8605, 9104)]