20805220814

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{725983}}^1$

素因数の和:726104

約数の個数: 32

約数和(自身を含む): 37635010560

約数和(自身を除く): 16829789746

約数列:

[1, 2, 7, 14, 23, 46, 89, 161, 178, 322, 623, 1246, 2047, 4094, 14329, 28658, 725983, 1451966, 5081881, 10163762, 16697609, 33395218, 64612487, 116883263, 129224974, 233766526, 452287409, 904574818, 1486087201, 2972174402, 10402610407, 20805220814]

約数ペア:

[(1, 20805220814), (2, 10402610407), (7, 2972174402), (14, 1486087201), (23, 904574818), (46, 452287409), (89, 233766526), (161, 129224974), (178, 116883263), (322, 64612487), (623, 33395218), (1246, 16697609), (2047, 10163762), (4094, 5081881), (14329, 1451966), (28658, 725983)]