207720280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{305471}}^1$

素因数の和:305499

約数の個数: 32

約数和(自身を含む): 494864640

約数和(自身を除く): 287144360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 305471, 610942, 1221884, 1527355, 2443768, 3054710, 5193007, 6109420, 10386014, 12218840, 20772028, 25965035, 41544056, 51930070, 103860140, 207720280]

約数ペア:

[(1, 207720280), (2, 103860140), (4, 51930070), (5, 41544056), (8, 25965035), (10, 20772028), (17, 12218840), (20, 10386014), (34, 6109420), (40, 5193007), (68, 3054710), (85, 2443768), (136, 1527355), (170, 1221884), (340, 610942), (680, 305471)]