21465160

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3917}}^1$

素因数の和:4065

約数の個数: 32

約数和(自身を含む): 48661560

約数和(自身を除く): 27196400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3917, 5480, 7834, 15668, 19585, 31336, 39170, 78340, 156680, 536629, 1073258, 2146516, 2683145, 4293032, 5366290, 10732580, 21465160]

約数ペア:

[(1, 21465160), (2, 10732580), (4, 5366290), (5, 4293032), (8, 2683145), (10, 2146516), (20, 1073258), (40, 536629), (137, 156680), (274, 78340), (548, 39170), (685, 31336), (1096, 19585), (1370, 15668), (2740, 7834), (3917, 5480)]