21466263

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 15305577

約数列:

[1, 3, 7, 13, 21, 39, 47, 49, 91, 141, 147, 239, 273, 329, 611, 637, 717, 987, 1673, 1833, 1911, 2303, 3107, 4277, 5019, 6909, 9321, 11233, 11711, 12831, 21749, 29939, 33699, 35133, 65247, 78631, 89817, 146029, 152243, 235893, 438087, 456729, 550417, 1022203, 1651251, 3066609, 7155421, 21466263]

約数ペア:

[(1, 21466263), (3, 7155421), (7, 3066609), (13, 1651251), (21, 1022203), (39, 550417), (47, 456729), (49, 438087), (91, 235893), (141, 152243), (147, 146029), (239, 89817), (273, 78631), (329, 65247), (611, 35133), (637, 33699), (717, 29939), (987, 21749), (1673, 12831), (1833, 11711), (1911, 11233), (2303, 9321), (3107, 6909), (4277, 5019)]