20119820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1049}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 48686400

約数和(自身を除く): 28566580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1049, 1370, 1918, 2098, 2740, 3836, 4196, 4795, 5245, 7343, 9590, 10490, 14686, 19180, 20980, 29372, 36715, 73430, 143713, 146860, 287426, 574852, 718565, 1005991, 1437130, 2011982, 2874260, 4023964, 5029955, 10059910, 20119820]

約数ペア:

[(1, 20119820), (2, 10059910), (4, 5029955), (5, 4023964), (7, 2874260), (10, 2011982), (14, 1437130), (20, 1005991), (28, 718565), (35, 574852), (70, 287426), (137, 146860), (140, 143713), (274, 73430), (548, 36715), (685, 29372), (959, 20980), (1049, 19180), (1370, 14686), (1918, 10490), (2098, 9590), (2740, 7343), (3836, 5245), (4196, 4795)]