20861608

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 19521752

約数列:

[1, 2, 4, 8, 47, 94, 113, 188, 226, 376, 452, 491, 904, 982, 1964, 3928, 5311, 10622, 21244, 23077, 42488, 46154, 55483, 92308, 110966, 184616, 221932, 443864, 2607701, 5215402, 10430804, 20861608]

約数ペア:

[(1, 20861608), (2, 10430804), (4, 5215402), (8, 2607701), (47, 443864), (94, 221932), (113, 184616), (188, 110966), (226, 92308), (376, 55483), (452, 46154), (491, 42488), (904, 23077), (982, 21244), (1964, 10622), (3928, 5311)]