21689680

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9349}}^1$

素因数の和:9391

約数の個数: 40

約数和(自身を含む): 52173000

約数和(自身を除く): 30483320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9349, 18698, 37396, 46745, 74792, 93490, 149584, 186980, 271121, 373960, 542242, 747920, 1084484, 1355605, 2168968, 2711210, 4337936, 5422420, 10844840, 21689680]

約数ペア:

[(1, 21689680), (2, 10844840), (4, 5422420), (5, 4337936), (8, 2711210), (10, 2168968), (16, 1355605), (20, 1084484), (29, 747920), (40, 542242), (58, 373960), (80, 271121), (116, 186980), (145, 149584), (232, 93490), (290, 74792), (464, 46745), (580, 37396), (1160, 18698), (2320, 9349)]