20278300940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{105167}}^1$

素因数の和:105518

約数の個数: 48

約数和(自身を含む): 44099887104

約数和(自身を除く): 23821586164

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 311, 620, 622, 1244, 1555, 3110, 6220, 9641, 19282, 38564, 48205, 96410, 105167, 192820, 210334, 420668, 525835, 1051670, 2103340, 3260177, 6520354, 13040708, 16300885, 32601770, 32706937, 65203540, 65413874, 130827748, 163534685, 327069370, 654138740, 1013915047, 2027830094, 4055660188, 5069575235, 10139150470, 20278300940]

約数ペア:

[(1, 20278300940), (2, 10139150470), (4, 5069575235), (5, 4055660188), (10, 2027830094), (20, 1013915047), (31, 654138740), (62, 327069370), (124, 163534685), (155, 130827748), (310, 65413874), (311, 65203540), (620, 32706937), (622, 32601770), (1244, 16300885), (1555, 13040708), (3110, 6520354), (6220, 3260177), (9641, 2103340), (19282, 1051670), (38564, 525835), (48205, 420668), (96410, 210334), (105167, 192820)]