19117971

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 11122029

約数列:

[1, 3, 9, 19, 27, 57, 83, 171, 249, 449, 513, 747, 1347, 1577, 2241, 4041, 4731, 8531, 12123, 14193, 25593, 37267, 42579, 76779, 111801, 230337, 335403, 708073, 1006209, 2124219, 6372657, 19117971]

約数ペア:

[(1, 19117971), (3, 6372657), (9, 2124219), (19, 1006209), (27, 708073), (57, 335403), (83, 230337), (171, 111801), (249, 76779), (449, 42579), (513, 37267), (747, 25593), (1347, 14193), (1577, 12123), (2241, 8531), (4041, 4731)]