13640320

素因数分解:

$2^7\times 5^1\times {\mathrm{21313}}^1$

素因数の和:21332

約数の個数: 32

約数和(自身を含む): 32610420

約数和(自身を除く): 18970100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 21313, 42626, 85252, 106565, 170504, 213130, 341008, 426260, 682016, 852520, 1364032, 1705040, 2728064, 3410080, 6820160, 13640320]

約数ペア:

[(1, 13640320), (2, 6820160), (4, 3410080), (5, 2728064), (8, 1705040), (10, 1364032), (16, 852520), (20, 682016), (32, 426260), (40, 341008), (64, 213130), (80, 170504), (128, 106565), (160, 85252), (320, 42626), (640, 21313)]