19694840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2633}}^1$

素因数の和:2672

約数の個数: 64

約数和(自身を含む): 51204960

約数和(自身を除く): 31510120

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2633, 3740, 5266, 7480, 10532, 13165, 21064, 26330, 28963, 44761, 52660, 57926, 89522, 105320, 115852, 144815, 179044, 223805, 231704, 289630, 358088, 447610, 492371, 579260, 895220, 984742, 1158520, 1790440, 1969484, 2461855, 3938968, 4923710, 9847420, 19694840]

約数ペア:

[(1, 19694840), (2, 9847420), (4, 4923710), (5, 3938968), (8, 2461855), (10, 1969484), (11, 1790440), (17, 1158520), (20, 984742), (22, 895220), (34, 579260), (40, 492371), (44, 447610), (55, 358088), (68, 289630), (85, 231704), (88, 223805), (110, 179044), (136, 144815), (170, 115852), (187, 105320), (220, 89522), (340, 57926), (374, 52660), (440, 44761), (680, 28963), (748, 26330), (935, 21064), (1496, 13165), (1870, 10532), (2633, 7480), (3740, 5266)]