21556424

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 41485440

約数和(自身を除く): 19929016

約数列:

[1, 2, 4, 8, 61, 122, 163, 244, 271, 326, 488, 542, 652, 1084, 1304, 2168, 9943, 16531, 19886, 33062, 39772, 44173, 66124, 79544, 88346, 132248, 176692, 353384, 2694553, 5389106, 10778212, 21556424]

約数ペア:

[(1, 21556424), (2, 10778212), (4, 5389106), (8, 2694553), (61, 353384), (122, 176692), (163, 132248), (244, 88346), (271, 79544), (326, 66124), (488, 44173), (542, 39772), (652, 33062), (1084, 19886), (1304, 16531), (2168, 9943)]