80321620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1\times {\mathrm{367}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 175085568

約数和(自身を除く): 94763948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 353, 367, 620, 706, 734, 1412, 1468, 1765, 1835, 3530, 3670, 7060, 7340, 10943, 11377, 21886, 22754, 43772, 45508, 54715, 56885, 109430, 113770, 129551, 218860, 227540, 259102, 518204, 647755, 1295510, 2591020, 4016081, 8032162, 16064324, 20080405, 40160810, 80321620]

約数ペア:

[(1, 80321620), (2, 40160810), (4, 20080405), (5, 16064324), (10, 8032162), (20, 4016081), (31, 2591020), (62, 1295510), (124, 647755), (155, 518204), (310, 259102), (353, 227540), (367, 218860), (620, 129551), (706, 113770), (734, 109430), (1412, 56885), (1468, 54715), (1765, 45508), (1835, 43772), (3530, 22754), (3670, 21886), (7060, 11377), (7340, 10943)]