28702760

素因数分解:

$2^3\times 5^1\times {\mathrm{739}}^1\times {\mathrm{971}}^1$

素因数の和:1721

約数の個数: 32

約数和(自身を含む): 64735200

約数和(自身を除く): 36032440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 739, 971, 1478, 1942, 2956, 3695, 3884, 4855, 5912, 7390, 7768, 9710, 14780, 19420, 29560, 38840, 717569, 1435138, 2870276, 3587845, 5740552, 7175690, 14351380, 28702760]

約数ペア:

[(1, 28702760), (2, 14351380), (4, 7175690), (5, 5740552), (8, 3587845), (10, 2870276), (20, 1435138), (40, 717569), (739, 38840), (971, 29560), (1478, 19420), (1942, 14780), (2956, 9710), (3695, 7768), (3884, 7390), (4855, 5912)]