21136980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2333}}^1$

素因数の和:2496

約数の個数: 48

約数和(自身を含む): 59601024

約数和(自身を除く): 38464044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 151, 302, 453, 604, 755, 906, 1510, 1812, 2265, 2333, 3020, 4530, 4666, 6999, 9060, 9332, 11665, 13998, 23330, 27996, 34995, 46660, 69990, 139980, 352283, 704566, 1056849, 1409132, 1761415, 2113698, 3522830, 4227396, 5284245, 7045660, 10568490, 21136980]

約数ペア:

[(1, 21136980), (2, 10568490), (3, 7045660), (4, 5284245), (5, 4227396), (6, 3522830), (10, 2113698), (12, 1761415), (15, 1409132), (20, 1056849), (30, 704566), (60, 352283), (151, 139980), (302, 69990), (453, 46660), (604, 34995), (755, 27996), (906, 23330), (1510, 13998), (1812, 11665), (2265, 9332), (2333, 9060), (3020, 6999), (4530, 4666)]