20365136

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{461}}^1$

素因数の和:731

約数の個数: 40

約数和(自身を含む): 43309728

約数和(自身を除く): 22944592

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 251, 461, 502, 922, 1004, 1844, 2008, 2761, 3688, 4016, 5071, 5522, 7376, 10142, 11044, 20284, 22088, 40568, 44176, 81136, 115711, 231422, 462844, 925688, 1272821, 1851376, 2545642, 5091284, 10182568, 20365136]

約数ペア:

[(1, 20365136), (2, 10182568), (4, 5091284), (8, 2545642), (11, 1851376), (16, 1272821), (22, 925688), (44, 462844), (88, 231422), (176, 115711), (251, 81136), (461, 44176), (502, 40568), (922, 22088), (1004, 20284), (1844, 11044), (2008, 10142), (2761, 7376), (3688, 5522), (4016, 5071)]