398617955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{571}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 521883648

約数和(自身を除く): 123265693

約数列:

[1, 5, 17, 43, 85, 191, 215, 571, 731, 955, 2855, 3247, 3655, 8213, 9707, 16235, 24553, 41065, 48535, 109061, 122765, 139621, 417401, 545305, 698105, 1854037, 2087005, 4689623, 9270185, 23448115, 79723591, 398617955]

約数ペア:

[(1, 398617955), (5, 79723591), (17, 23448115), (43, 9270185), (85, 4689623), (191, 2087005), (215, 1854037), (571, 698105), (731, 545305), (955, 417401), (2855, 139621), (3247, 122765), (3655, 109061), (8213, 48535), (9707, 41065), (16235, 24553)]