21372603

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 33825792

約数和(自身を除く): 12453189

約数列:

[1, 3, 7, 21, 41, 103, 123, 241, 287, 309, 721, 723, 861, 1687, 2163, 4223, 5061, 9881, 12669, 24823, 29561, 29643, 69167, 74469, 88683, 173761, 207501, 521283, 1017743, 3053229, 7124201, 21372603]

約数ペア:

[(1, 21372603), (3, 7124201), (7, 3053229), (21, 1017743), (41, 521283), (103, 207501), (123, 173761), (241, 88683), (287, 74469), (309, 69167), (721, 29643), (723, 29561), (861, 24823), (1687, 12669), (2163, 9881), (4223, 5061)]