211011280

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{6449}}^1$

素因数の和:6871

約数の個数: 40

約数和(自身を含む): 491877000

約数和(自身を除く): 280865720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6449, 6544, 8180, 12898, 16360, 25796, 32245, 32720, 51592, 64490, 103184, 128980, 257960, 515920, 2637641, 5275282, 10550564, 13188205, 21101128, 26376410, 42202256, 52752820, 105505640, 211011280]

約数ペア:

[(1, 211011280), (2, 105505640), (4, 52752820), (5, 42202256), (8, 26376410), (10, 21101128), (16, 13188205), (20, 10550564), (40, 5275282), (80, 2637641), (409, 515920), (818, 257960), (1636, 128980), (2045, 103184), (3272, 64490), (4090, 51592), (6449, 32720), (6544, 32245), (8180, 25796), (12898, 16360)]