85431920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{409}}^1$

素因数の和:802

約数の個数: 80

約数和(自身を含む): 228169920

約数和(自身を除く): 142738000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 373, 409, 560, 746, 818, 1492, 1636, 1865, 2045, 2611, 2863, 2984, 3272, 3730, 4090, 5222, 5726, 5968, 6544, 7460, 8180, 10444, 11452, 13055, 14315, 14920, 16360, 20888, 22904, 26110, 28630, 29840, 32720, 41776, 45808, 52220, 57260, 104440, 114520, 152557, 208880, 229040, 305114, 610228, 762785, 1067899, 1220456, 1525570, 2135798, 2440912, 3051140, 4271596, 5339495, 6102280, 8543192, 10678990, 12204560, 17086384, 21357980, 42715960, 85431920]

約数ペア:

[(1, 85431920), (2, 42715960), (4, 21357980), (5, 17086384), (7, 12204560), (8, 10678990), (10, 8543192), (14, 6102280), (16, 5339495), (20, 4271596), (28, 3051140), (35, 2440912), (40, 2135798), (56, 1525570), (70, 1220456), (80, 1067899), (112, 762785), (140, 610228), (280, 305114), (373, 229040), (409, 208880), (560, 152557), (746, 114520), (818, 104440), (1492, 57260), (1636, 52220), (1865, 45808), (2045, 41776), (2611, 32720), (2863, 29840), (2984, 28630), (3272, 26110), (3730, 22904), (4090, 20888), (5222, 16360), (5726, 14920), (5968, 14315), (6544, 13055), (7460, 11452), (8180, 10444)]