18972723

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3571}}^1$

素因数の和:3615

約数の個数: 32

約数和(自身を含む): 32919552

約数和(自身を除く): 13946829

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 3571, 5313, 10713, 24997, 39281, 74991, 82133, 117843, 246399, 274967, 574931, 824901, 903463, 1724793, 2710389, 6324241, 18972723]

約数ペア:

[(1, 18972723), (3, 6324241), (7, 2710389), (11, 1724793), (21, 903463), (23, 824901), (33, 574931), (69, 274967), (77, 246399), (161, 117843), (231, 82133), (253, 74991), (483, 39281), (759, 24997), (1771, 10713), (3571, 5313)]