20498224

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2459}}^1$

素因数の和:2988

約数の個数: 20

約数和(自身を含む): 39807720

約数和(自身を除く): 19309496

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2459, 4168, 4918, 8336, 9836, 19672, 39344, 1281139, 2562278, 5124556, 10249112, 20498224]

約数ペア:

[(1, 20498224), (2, 10249112), (4, 5124556), (8, 2562278), (16, 1281139), (521, 39344), (1042, 19672), (2084, 9836), (2459, 8336), (4168, 4918)]