21529520

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1409}}^1$

素因数の和:1613

約数の個数: 40

約数和(自身を含む): 50353920

約数和(自身を除く): 28824400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1409, 1528, 1910, 2818, 3056, 3820, 5636, 7045, 7640, 11272, 14090, 15280, 22544, 28180, 56360, 112720, 269119, 538238, 1076476, 1345595, 2152952, 2691190, 4305904, 5382380, 10764760, 21529520]

約数ペア:

[(1, 21529520), (2, 10764760), (4, 5382380), (5, 4305904), (8, 2691190), (10, 2152952), (16, 1345595), (20, 1076476), (40, 538238), (80, 269119), (191, 112720), (382, 56360), (764, 28180), (955, 22544), (1409, 15280), (1528, 14090), (1910, 11272), (2818, 7640), (3056, 7045), (3820, 5636)]