278288240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{112213}}^1$

素因数の和:112257

約数の個数: 40

約数和(自身を含む): 667897728

約数和(自身を除く): 389609488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 112213, 224426, 448852, 561065, 897704, 1122130, 1795408, 2244260, 3478603, 4488520, 6957206, 8977040, 13914412, 17393015, 27828824, 34786030, 55657648, 69572060, 139144120, 278288240]

約数ペア:

[(1, 278288240), (2, 139144120), (4, 69572060), (5, 55657648), (8, 34786030), (10, 27828824), (16, 17393015), (20, 13914412), (31, 8977040), (40, 6957206), (62, 4488520), (80, 3478603), (124, 2244260), (155, 1795408), (248, 1122130), (310, 897704), (496, 561065), (620, 448852), (1240, 224426), (2480, 112213)]