21358580

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{6173}}^1$

素因数の和:6355

約数の個数: 24

約数和(自身を含む): 45119592

約数和(自身を除く): 23761012

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 6173, 12346, 24692, 30865, 61730, 123460, 1067929, 2135858, 4271716, 5339645, 10679290, 21358580]

約数ペア:

[(1, 21358580), (2, 10679290), (4, 5339645), (5, 4271716), (10, 2135858), (20, 1067929), (173, 123460), (346, 61730), (692, 30865), (865, 24692), (1730, 12346), (3460, 6173)]