20201880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2131}}^1$

素因数の和:2224

約数の個数: 64

約数和(自身を含む): 61401600

約数和(自身を除く): 41199720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2131, 2370, 3160, 4262, 4740, 6393, 8524, 9480, 10655, 12786, 17048, 21310, 25572, 31965, 42620, 51144, 63930, 85240, 127860, 168349, 255720, 336698, 505047, 673396, 841745, 1010094, 1346792, 1683490, 2020188, 2525235, 3366980, 4040376, 5050470, 6733960, 10100940, 20201880]

約数ペア:

[(1, 20201880), (2, 10100940), (3, 6733960), (4, 5050470), (5, 4040376), (6, 3366980), (8, 2525235), (10, 2020188), (12, 1683490), (15, 1346792), (20, 1010094), (24, 841745), (30, 673396), (40, 505047), (60, 336698), (79, 255720), (120, 168349), (158, 127860), (237, 85240), (316, 63930), (395, 51144), (474, 42620), (632, 31965), (790, 25572), (948, 21310), (1185, 17048), (1580, 12786), (1896, 10655), (2131, 9480), (2370, 8524), (3160, 6393), (4262, 4740)]