208471280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{84061}}^1$

素因数の和:84105

約数の個数: 40

約数和(自身を含む): 500337024

約数和(自身を除く): 291865744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 84061, 168122, 336244, 420305, 672488, 840610, 1344976, 1681220, 2605891, 3362440, 5211782, 6724880, 10423564, 13029455, 20847128, 26058910, 41694256, 52117820, 104235640, 208471280]

約数ペア:

[(1, 208471280), (2, 104235640), (4, 52117820), (5, 41694256), (8, 26058910), (10, 20847128), (16, 13029455), (20, 10423564), (31, 6724880), (40, 5211782), (62, 3362440), (80, 2605891), (124, 1681220), (155, 1344976), (248, 840610), (310, 672488), (496, 420305), (620, 336244), (1240, 168122), (2480, 84061)]