20891396

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 37927680

約数和(自身を除く): 17036284

約数列:

[1, 2, 4, 31, 62, 124, 331, 509, 662, 1018, 1324, 2036, 10261, 15779, 20522, 31558, 41044, 63116, 168479, 336958, 673916, 5222849, 10445698, 20891396]

約数ペア:

[(1, 20891396), (2, 10445698), (4, 5222849), (31, 673916), (62, 336958), (124, 168479), (331, 63116), (509, 41044), (662, 31558), (1018, 20522), (1324, 15779), (2036, 10261)]