28071267

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 47278080

約数和(自身を除く): 19206813

約数列:

[1, 3, 7, 17, 21, 47, 49, 51, 119, 141, 147, 239, 329, 357, 717, 799, 833, 987, 1673, 2303, 2397, 2499, 4063, 5019, 5593, 6909, 11233, 11711, 12189, 16779, 28441, 33699, 35133, 39151, 78631, 85323, 117453, 190961, 199087, 235893, 550417, 572883, 597261, 1336727, 1651251, 4010181, 9357089, 28071267]

約数ペア:

[(1, 28071267), (3, 9357089), (7, 4010181), (17, 1651251), (21, 1336727), (47, 597261), (49, 572883), (51, 550417), (119, 235893), (141, 199087), (147, 190961), (239, 117453), (329, 85323), (357, 78631), (717, 39151), (799, 35133), (833, 33699), (987, 28441), (1673, 16779), (2303, 12189), (2397, 11711), (2499, 11233), (4063, 6909), (5019, 5593)]