39898960

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1987}}^1$

素因数の和:2251

約数の個数: 40

約数和(自身を含む): 93181536

約数和(自身を除く): 53282576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1987, 2008, 2510, 3974, 4016, 5020, 7948, 9935, 10040, 15896, 19870, 20080, 31792, 39740, 79480, 158960, 498737, 997474, 1994948, 2493685, 3989896, 4987370, 7979792, 9974740, 19949480, 39898960]

約数ペア:

[(1, 39898960), (2, 19949480), (4, 9974740), (5, 7979792), (8, 4987370), (10, 3989896), (16, 2493685), (20, 1994948), (40, 997474), (80, 498737), (251, 158960), (502, 79480), (1004, 39740), (1255, 31792), (1987, 20080), (2008, 19870), (2510, 15896), (3974, 10040), (4016, 9935), (5020, 7948)]