18779120

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1229}}^1$

素因数の和:1433

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 25146640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1229, 1528, 1910, 2458, 3056, 3820, 4916, 6145, 7640, 9832, 12290, 15280, 19664, 24580, 49160, 98320, 234739, 469478, 938956, 1173695, 1877912, 2347390, 3755824, 4694780, 9389560, 18779120]

約数ペア:

[(1, 18779120), (2, 9389560), (4, 4694780), (5, 3755824), (8, 2347390), (10, 1877912), (16, 1173695), (20, 938956), (40, 469478), (80, 234739), (191, 98320), (382, 49160), (764, 24580), (955, 19664), (1229, 15280), (1528, 12290), (1910, 9832), (2458, 7640), (3056, 6145), (3820, 4916)]