221531128

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{304301}}^1$

素因数の和:304327

約数の個数: 32

約数和(自身を含む): 511227360

約数和(自身を除く): 289696232

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 304301, 608602, 1217204, 2130107, 2434408, 3955913, 4260214, 7911826, 8520428, 15823652, 17040856, 27691391, 31647304, 55382782, 110765564, 221531128]

約数ペア:

[(1, 221531128), (2, 110765564), (4, 55382782), (7, 31647304), (8, 27691391), (13, 17040856), (14, 15823652), (26, 8520428), (28, 7911826), (52, 4260214), (56, 3955913), (91, 2434408), (104, 2130107), (182, 1217204), (364, 608602), (728, 304301)]