20305280

素因数分解:

$2^7\times 5^1\times {\mathrm{31727}}^1$

素因数の和:31746

約数の個数: 32

約数和(自身を含む): 48543840

約数和(自身を除く): 28238560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31727, 63454, 126908, 158635, 253816, 317270, 507632, 634540, 1015264, 1269080, 2030528, 2538160, 4061056, 5076320, 10152640, 20305280]

約数ペア:

[(1, 20305280), (2, 10152640), (4, 5076320), (5, 4061056), (8, 2538160), (10, 2030528), (16, 1269080), (20, 1015264), (32, 634540), (40, 507632), (64, 317270), (80, 253816), (128, 158635), (160, 126908), (320, 63454), (640, 31727)]