20178039820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1\times {\mathrm{51341}}^1$

素因数の和:51850

約数の個数: 48

約数和(自身を含む): 43455047328

約数和(自身を除く): 23277007508

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 457, 860, 914, 1828, 2285, 4570, 9140, 19651, 39302, 51341, 78604, 98255, 102682, 196510, 205364, 256705, 393020, 513410, 1026820, 2207663, 4415326, 8830652, 11038315, 22076630, 23462837, 44153260, 46925674, 93851348, 117314185, 234628370, 469256740, 1008901991, 2017803982, 4035607964, 5044509955, 10089019910, 20178039820]

約数ペア:

[(1, 20178039820), (2, 10089019910), (4, 5044509955), (5, 4035607964), (10, 2017803982), (20, 1008901991), (43, 469256740), (86, 234628370), (172, 117314185), (215, 93851348), (430, 46925674), (457, 44153260), (860, 23462837), (914, 22076630), (1828, 11038315), (2285, 8830652), (4570, 4415326), (9140, 2207663), (19651, 1026820), (39302, 513410), (51341, 393020), (78604, 256705), (98255, 205364), (102682, 196510)]