21381960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178183}}^1$

素因数の和:178197

約数の個数: 32

約数和(自身を含む): 64146240

約数和(自身を除く): 42764280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178183, 356366, 534549, 712732, 890915, 1069098, 1425464, 1781830, 2138196, 2672745, 3563660, 4276392, 5345490, 7127320, 10690980, 21381960]

約数ペア:

[(1, 21381960), (2, 10690980), (3, 7127320), (4, 5345490), (5, 4276392), (6, 3563660), (8, 2672745), (10, 2138196), (12, 1781830), (15, 1425464), (20, 1069098), (24, 890915), (30, 712732), (40, 534549), (60, 356366), (120, 178183)]