278580880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{112331}}^1$

素因数の和:112375

約数の個数: 40

約数和(自身を含む): 668600064

約数和(自身を除く): 390019184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 112331, 224662, 449324, 561655, 898648, 1123310, 1797296, 2246620, 3482261, 4493240, 6964522, 8986480, 13929044, 17411305, 27858088, 34822610, 55716176, 69645220, 139290440, 278580880]

約数ペア:

[(1, 278580880), (2, 139290440), (4, 69645220), (5, 55716176), (8, 34822610), (10, 27858088), (16, 17411305), (20, 13929044), (31, 8986480), (40, 6964522), (62, 4493240), (80, 3482261), (124, 2246620), (155, 1797296), (248, 1123310), (310, 898648), (496, 561655), (620, 449324), (1240, 224662), (2480, 112331)]