18620019

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{521}}^1$

素因数の和:576

約数の個数: 36

約数和(自身を含む): 31025592

約数和(自身を除く): 12405573

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 361, 521, 627, 1083, 1563, 1881, 3249, 3971, 4689, 5731, 9899, 11913, 17193, 29697, 35739, 51579, 89091, 108889, 188081, 326667, 564243, 980001, 1692729, 2068891, 6206673, 18620019]

約数ペア:

[(1, 18620019), (3, 6206673), (9, 2068891), (11, 1692729), (19, 980001), (33, 564243), (57, 326667), (99, 188081), (171, 108889), (209, 89091), (361, 51579), (521, 35739), (627, 29697), (1083, 17193), (1563, 11913), (1881, 9899), (3249, 5731), (3971, 4689)]