21467680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10321}}^1$

素因数の和:10349

約数の個数: 48

約数和(自身を含む): 54624024

約数和(自身を除く): 33156344

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10321, 20642, 41284, 51605, 82568, 103210, 134173, 165136, 206420, 268346, 330272, 412840, 536692, 670865, 825680, 1073384, 1341730, 1651360, 2146768, 2683460, 4293536, 5366920, 10733840, 21467680]

約数ペア:

[(1, 21467680), (2, 10733840), (4, 5366920), (5, 4293536), (8, 2683460), (10, 2146768), (13, 1651360), (16, 1341730), (20, 1073384), (26, 825680), (32, 670865), (40, 536692), (52, 412840), (65, 330272), (80, 268346), (104, 206420), (130, 165136), (160, 134173), (208, 103210), (260, 82568), (416, 51605), (520, 41284), (1040, 20642), (2080, 10321)]