21520682380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1\times {\mathrm{24229}}^1$

素因数の和:24826

約数の個数: 48

約数和(自身を含む): 45794700000

約数和(自身を除く): 24274017620

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 499, 890, 998, 1780, 1996, 2495, 4990, 9980, 24229, 44411, 48458, 88822, 96916, 121145, 177644, 222055, 242290, 444110, 484580, 888220, 2156381, 4312762, 8625524, 10781905, 12090271, 21563810, 24180542, 43127620, 48361084, 60451355, 120902710, 241805420, 1076034119, 2152068238, 4304136476, 5380170595, 10760341190, 21520682380]

約数ペア:

[(1, 21520682380), (2, 10760341190), (4, 5380170595), (5, 4304136476), (10, 2152068238), (20, 1076034119), (89, 241805420), (178, 120902710), (356, 60451355), (445, 48361084), (499, 43127620), (890, 24180542), (998, 21563810), (1780, 12090271), (1996, 10781905), (2495, 8625524), (4990, 4312762), (9980, 2156381), (24229, 888220), (44411, 484580), (48458, 444110), (88822, 242290), (96916, 222055), (121145, 177644)]