20783744

素因数分解:

$2^7\times {\mathrm{397}}^1\times {\mathrm{409}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 41610900

約数和(自身を除く): 20827156

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 397, 409, 794, 818, 1588, 1636, 3176, 3272, 6352, 6544, 12704, 13088, 25408, 26176, 50816, 52352, 162373, 324746, 649492, 1298984, 2597968, 5195936, 10391872, 20783744]

約数ペア:

[(1, 20783744), (2, 10391872), (4, 5195936), (8, 2597968), (16, 1298984), (32, 649492), (64, 324746), (128, 162373), (397, 52352), (409, 50816), (794, 26176), (818, 25408), (1588, 13088), (1636, 12704), (3176, 6544), (3272, 6352)]