25400080

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4019}}^1$

素因数の和:4111

約数の個数: 40

約数和(自身を含む): 59817600

約数和(自身を除く): 34417520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4019, 6320, 8038, 16076, 20095, 32152, 40190, 64304, 80380, 160760, 317501, 321520, 635002, 1270004, 1587505, 2540008, 3175010, 5080016, 6350020, 12700040, 25400080]

約数ペア:

[(1, 25400080), (2, 12700040), (4, 6350020), (5, 5080016), (8, 3175010), (10, 2540008), (16, 1587505), (20, 1270004), (40, 635002), (79, 321520), (80, 317501), (158, 160760), (316, 80380), (395, 64304), (632, 40190), (790, 32152), (1264, 20095), (1580, 16076), (3160, 8038), (4019, 6320)]