21898930

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3313}}^1$

素因数の和:3981

約数の個数: 16

約数和(自身を含む): 39489624

約数和(自身を除く): 17590694

約数列:

[1, 2, 5, 10, 661, 1322, 3305, 3313, 6610, 6626, 16565, 33130, 2189893, 4379786, 10949465, 21898930]

約数ペア:

[(1, 21898930), (2, 10949465), (5, 4379786), (10, 2189893), (661, 33130), (1322, 16565), (3305, 6626), (3313, 6610)]