18915864

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{523}}^1$

素因数の和:680

約数の個数: 64

約数和(自身を含む): 52064640

約数和(自身を除く): 33148776

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 137, 264, 274, 411, 523, 548, 822, 1046, 1096, 1507, 1569, 1644, 2092, 3014, 3138, 3288, 4184, 4521, 5753, 6028, 6276, 9042, 11506, 12056, 12552, 17259, 18084, 23012, 34518, 36168, 46024, 69036, 71651, 138072, 143302, 214953, 286604, 429906, 573208, 788161, 859812, 1576322, 1719624, 2364483, 3152644, 4728966, 6305288, 9457932, 18915864]

約数ペア:

[(1, 18915864), (2, 9457932), (3, 6305288), (4, 4728966), (6, 3152644), (8, 2364483), (11, 1719624), (12, 1576322), (22, 859812), (24, 788161), (33, 573208), (44, 429906), (66, 286604), (88, 214953), (132, 143302), (137, 138072), (264, 71651), (274, 69036), (411, 46024), (523, 36168), (548, 34518), (822, 23012), (1046, 18084), (1096, 17259), (1507, 12552), (1569, 12056), (1644, 11506), (2092, 9042), (3014, 6276), (3138, 6028), (3288, 5753), (4184, 4521)]