20979730

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 38801088

約数和(自身を除く): 17821358

約数列:

[1, 2, 5, 10, 61, 122, 163, 211, 305, 326, 422, 610, 815, 1055, 1630, 2110, 9943, 12871, 19886, 25742, 34393, 49715, 64355, 68786, 99430, 128710, 171965, 343930, 2097973, 4195946, 10489865, 20979730]

約数ペア:

[(1, 20979730), (2, 10489865), (5, 4195946), (10, 2097973), (61, 343930), (122, 171965), (163, 128710), (211, 99430), (305, 68786), (326, 64355), (422, 49715), (610, 34393), (815, 25742), (1055, 19886), (1630, 12871), (2110, 9943)]