18880323

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^2$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 32934144

約数和(自身を除く): 14053821

約数列:

[1, 3, 7, 11, 21, 33, 37, 47, 77, 111, 141, 231, 259, 329, 407, 517, 777, 987, 1221, 1551, 1739, 2209, 2849, 3619, 5217, 6627, 8547, 10857, 12173, 15463, 19129, 24299, 36519, 46389, 57387, 72897, 81733, 133903, 170093, 245199, 401709, 510279, 572131, 899063, 1716393, 2697189, 6293441, 18880323]

約数ペア:

[(1, 18880323), (3, 6293441), (7, 2697189), (11, 1716393), (21, 899063), (33, 572131), (37, 510279), (47, 401709), (77, 245199), (111, 170093), (141, 133903), (231, 81733), (259, 72897), (329, 57387), (407, 46389), (517, 36519), (777, 24299), (987, 19129), (1221, 15463), (1551, 12173), (1739, 10857), (2209, 8547), (2849, 6627), (3619, 5217)]