21861430

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^2\times {\mathrm{487}}^1$

素因数の和:628

約数の個数: 24

約数和(自身を含む): 40028688

約数和(自身を除く): 18167258

約数列:

[1, 2, 5, 10, 67, 134, 335, 487, 670, 974, 2435, 4489, 4870, 8978, 22445, 32629, 44890, 65258, 163145, 326290, 2186143, 4372286, 10930715, 21861430]

約数ペア:

[(1, 21861430), (2, 10930715), (5, 4372286), (10, 2186143), (67, 326290), (134, 163145), (335, 65258), (487, 44890), (670, 32629), (974, 22445), (2435, 8978), (4489, 4870)]