81370840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{7039}}^1$

素因数の和:7084

約数の個数: 48

約数和(自身を含む): 194515200

約数和(自身を除く): 113144360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 2312, 2890, 5780, 7039, 11560, 14078, 28156, 35195, 56312, 70390, 119663, 140780, 239326, 281560, 478652, 598315, 957304, 1196630, 2034271, 2393260, 4068542, 4786520, 8137084, 10171355, 16274168, 20342710, 40685420, 81370840]

約数ペア:

[(1, 81370840), (2, 40685420), (4, 20342710), (5, 16274168), (8, 10171355), (10, 8137084), (17, 4786520), (20, 4068542), (34, 2393260), (40, 2034271), (68, 1196630), (85, 957304), (136, 598315), (170, 478652), (289, 281560), (340, 239326), (578, 140780), (680, 119663), (1156, 70390), (1445, 56312), (2312, 35195), (2890, 28156), (5780, 14078), (7039, 11560)]