72217160

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4021}}^1$

素因数の和:4481

約数の個数: 32

約数和(自身を含む): 162891000

約数和(自身を除く): 90673840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4021, 4490, 8042, 8980, 16084, 17960, 20105, 32168, 40210, 80420, 160840, 1805429, 3610858, 7221716, 9027145, 14443432, 18054290, 36108580, 72217160]

約数ペア:

[(1, 72217160), (2, 36108580), (4, 18054290), (5, 14443432), (8, 9027145), (10, 7221716), (20, 3610858), (40, 1805429), (449, 160840), (898, 80420), (1796, 40210), (2245, 32168), (3592, 20105), (4021, 17960), (4490, 16084), (8042, 8980)]