40175920

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1291}}^1$

素因数の和:1693

約数の個数: 40

約数和(自身を含む): 93721680

約数和(自身を除く): 53545760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1291, 1556, 1945, 2582, 3112, 3890, 5164, 6224, 6455, 7780, 10328, 12910, 15560, 20656, 25820, 31120, 51640, 103280, 502199, 1004398, 2008796, 2510995, 4017592, 5021990, 8035184, 10043980, 20087960, 40175920]

約数ペア:

[(1, 40175920), (2, 20087960), (4, 10043980), (5, 8035184), (8, 5021990), (10, 4017592), (16, 2510995), (20, 2008796), (40, 1004398), (80, 502199), (389, 103280), (778, 51640), (1291, 31120), (1556, 25820), (1945, 20656), (2582, 15560), (3112, 12910), (3890, 10328), (5164, 7780), (6224, 6455)]