19940812040

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1321}}^1\times {\mathrm{1579}}^1$

素因数の和:3150

約数の個数: 64

約数和(自身を含む): 45117216000

約数和(自身を除く): 25176403960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1321, 1579, 1912, 2390, 2642, 3158, 4780, 5284, 6316, 6605, 7895, 9560, 10568, 12632, 13210, 15790, 26420, 31580, 52840, 63160, 315719, 377381, 631438, 754762, 1262876, 1509524, 1578595, 1886905, 2085859, 2525752, 3019048, 3157190, 3773810, 4171718, 6314380, 7547620, 8343436, 10429295, 12628760, 15095240, 16686872, 20858590, 41717180, 83434360, 498520301, 997040602, 1994081204, 2492601505, 3988162408, 4985203010, 9970406020, 19940812040]

約数ペア:

[(1, 19940812040), (2, 9970406020), (4, 4985203010), (5, 3988162408), (8, 2492601505), (10, 1994081204), (20, 997040602), (40, 498520301), (239, 83434360), (478, 41717180), (956, 20858590), (1195, 16686872), (1321, 15095240), (1579, 12628760), (1912, 10429295), (2390, 8343436), (2642, 7547620), (3158, 6314380), (4780, 4171718), (5284, 3773810), (6316, 3157190), (6605, 3019048), (7895, 2525752), (9560, 2085859), (10568, 1886905), (12632, 1578595), (13210, 1509524), (15790, 1262876), (26420, 754762), (31580, 631438), (52840, 377381), (63160, 315719)]