28105040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4447}}^1$

素因数の和:4539

約数の個数: 40

約数和(自身を含む): 66186240

約数和(自身を除く): 38081200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4447, 6320, 8894, 17788, 22235, 35576, 44470, 71152, 88940, 177880, 351313, 355760, 702626, 1405252, 1756565, 2810504, 3513130, 5621008, 7026260, 14052520, 28105040]

約数ペア:

[(1, 28105040), (2, 14052520), (4, 7026260), (5, 5621008), (8, 3513130), (10, 2810504), (16, 1756565), (20, 1405252), (40, 702626), (79, 355760), (80, 351313), (158, 177880), (316, 88940), (395, 71152), (632, 44470), (790, 35576), (1264, 22235), (1580, 17788), (3160, 8894), (4447, 6320)]