20928200

素因数分解:

$2^3\times 5^2\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 48964500

約数和(自身を除く): 28036300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 269, 389, 538, 778, 1076, 1345, 1556, 1945, 2152, 2690, 3112, 3890, 5380, 6725, 7780, 9725, 10760, 13450, 15560, 19450, 26900, 38900, 53800, 77800, 104641, 209282, 418564, 523205, 837128, 1046410, 2092820, 2616025, 4185640, 5232050, 10464100, 20928200]

約数ペア:

[(1, 20928200), (2, 10464100), (4, 5232050), (5, 4185640), (8, 2616025), (10, 2092820), (20, 1046410), (25, 837128), (40, 523205), (50, 418564), (100, 209282), (200, 104641), (269, 77800), (389, 53800), (538, 38900), (778, 26900), (1076, 19450), (1345, 15560), (1556, 13450), (1945, 10760), (2152, 9725), (2690, 7780), (3112, 6725), (3890, 5380)]