21775028

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:752

約数の個数: 48

約数和(自身を含む): 45105984

約数和(自身を除く): 23330956

約数列:

[1, 2, 4, 11, 17, 22, 34, 43, 44, 68, 86, 172, 187, 374, 473, 677, 731, 748, 946, 1354, 1462, 1892, 2708, 2924, 7447, 8041, 11509, 14894, 16082, 23018, 29111, 29788, 32164, 46036, 58222, 116444, 126599, 253198, 320221, 494887, 506396, 640442, 989774, 1280884, 1979548, 5443757, 10887514, 21775028]

約数ペア:

[(1, 21775028), (2, 10887514), (4, 5443757), (11, 1979548), (17, 1280884), (22, 989774), (34, 640442), (43, 506396), (44, 494887), (68, 320221), (86, 253198), (172, 126599), (187, 116444), (374, 58222), (473, 46036), (677, 32164), (731, 29788), (748, 29111), (946, 23018), (1354, 16082), (1462, 14894), (1892, 11509), (2708, 8041), (2924, 7447)]