209418640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{84443}}^1$

素因数の和:84487

約数の個数: 40

約数和(自身を含む): 502610688

約数和(自身を除く): 293192048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 84443, 168886, 337772, 422215, 675544, 844430, 1351088, 1688860, 2617733, 3377720, 5235466, 6755440, 10470932, 13088665, 20941864, 26177330, 41883728, 52354660, 104709320, 209418640]

約数ペア:

[(1, 209418640), (2, 104709320), (4, 52354660), (5, 41883728), (8, 26177330), (10, 20941864), (16, 13088665), (20, 10470932), (31, 6755440), (40, 5235466), (62, 3377720), (80, 2617733), (124, 1688860), (155, 1351088), (248, 844430), (310, 675544), (496, 422215), (620, 337772), (1240, 168886), (2480, 84443)]