18751491

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:352

約数の個数: 36

約数和(自身を含む): 30333576

約数和(自身を除く): 11582085

約数列:

[1, 3, 9, 11, 33, 67, 99, 121, 201, 257, 363, 603, 737, 771, 1089, 2211, 2313, 2827, 6633, 8107, 8481, 17219, 24321, 25443, 31097, 51657, 72963, 93291, 154971, 189409, 279873, 568227, 1704681, 2083499, 6250497, 18751491]

約数ペア:

[(1, 18751491), (3, 6250497), (9, 2083499), (11, 1704681), (33, 568227), (67, 279873), (99, 189409), (121, 154971), (201, 93291), (257, 72963), (363, 51657), (603, 31097), (737, 25443), (771, 24321), (1089, 17219), (2211, 8481), (2313, 8107), (2827, 6633)]