21726560

素因数分解:

$2^5\times 5^1\times {\mathrm{251}}^1\times {\mathrm{541}}^1$

素因数の和:807

約数の個数: 48

約数和(自身を含む): 51628752

約数和(自身を除く): 29902192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 251, 502, 541, 1004, 1082, 1255, 2008, 2164, 2510, 2705, 4016, 4328, 5020, 5410, 8032, 8656, 10040, 10820, 17312, 20080, 21640, 40160, 43280, 86560, 135791, 271582, 543164, 678955, 1086328, 1357910, 2172656, 2715820, 4345312, 5431640, 10863280, 21726560]

約数ペア:

[(1, 21726560), (2, 10863280), (4, 5431640), (5, 4345312), (8, 2715820), (10, 2172656), (16, 1357910), (20, 1086328), (32, 678955), (40, 543164), (80, 271582), (160, 135791), (251, 86560), (502, 43280), (541, 40160), (1004, 21640), (1082, 20080), (1255, 17312), (2008, 10820), (2164, 10040), (2510, 8656), (2705, 8032), (4016, 5410), (4328, 5020)]