16890531

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 26695680

約数和(自身を除く): 9805149

約数列:

[1, 3, 7, 21, 47, 109, 141, 157, 327, 329, 471, 763, 987, 1099, 2289, 3297, 5123, 7379, 15369, 17113, 22137, 35861, 51339, 51653, 107583, 119791, 154959, 359373, 804311, 2412933, 5630177, 16890531]

約数ペア:

[(1, 16890531), (3, 5630177), (7, 2412933), (21, 804311), (47, 359373), (109, 154959), (141, 119791), (157, 107583), (327, 51653), (329, 51339), (471, 35861), (763, 22137), (987, 17113), (1099, 15369), (2289, 7379), (3297, 5123)]