20656238

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{509}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 31505760

約数和(自身を除く): 10849522

約数列:

[1, 2, 103, 197, 206, 394, 509, 1018, 20291, 40582, 52427, 100273, 104854, 200546, 10328119, 20656238]

約数ペア:

[(1, 20656238), (2, 10328119), (103, 200546), (197, 104854), (206, 100273), (394, 52427), (509, 40582), (1018, 20291)]