77640320

素因数分解:

$2^7\times 5^1\times {\mathrm{121313}}^1$

素因数の和:121332

約数の個数: 32

約数和(自身を含む): 185610420

約数和(自身を除く): 107970100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 121313, 242626, 485252, 606565, 970504, 1213130, 1941008, 2426260, 3882016, 4852520, 7764032, 9705040, 15528064, 19410080, 38820160, 77640320]

約数ペア:

[(1, 77640320), (2, 38820160), (4, 19410080), (5, 15528064), (8, 9705040), (10, 7764032), (16, 4852520), (20, 3882016), (32, 2426260), (40, 1941008), (64, 1213130), (80, 970504), (128, 606565), (160, 485252), (320, 242626), (640, 121313)]