25905680

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4099}}^1$

素因数の和:4191

約数の個数: 40

約数和(自身を含む): 61008000

約数和(自身を除く): 35102320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4099, 6320, 8198, 16396, 20495, 32792, 40990, 65584, 81980, 163960, 323821, 327920, 647642, 1295284, 1619105, 2590568, 3238210, 5181136, 6476420, 12952840, 25905680]

約数ペア:

[(1, 25905680), (2, 12952840), (4, 6476420), (5, 5181136), (8, 3238210), (10, 2590568), (16, 1619105), (20, 1295284), (40, 647642), (79, 327920), (80, 323821), (158, 163960), (316, 81980), (395, 65584), (632, 40990), (790, 32792), (1264, 20495), (1580, 16396), (3160, 8198), (4099, 6320)]