21105566

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{641}}^1$

素因数の和:907

約数の個数: 16

約数和(自身を含む): 32218128

約数和(自身を除く): 11112562

約数列:

[1, 2, 101, 163, 202, 326, 641, 1282, 16463, 32926, 64741, 104483, 129482, 208966, 10552783, 21105566]

約数ペア:

[(1, 21105566), (2, 10552783), (101, 208966), (163, 129482), (202, 104483), (326, 64741), (641, 32926), (1282, 16463)]