20282756

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 40153344

約数和(自身を除く): 19870588

約数列:

[1, 2, 4, 13, 26, 43, 47, 52, 86, 94, 172, 188, 193, 386, 559, 611, 772, 1118, 1222, 2021, 2236, 2444, 2509, 4042, 5018, 8084, 8299, 9071, 10036, 16598, 18142, 26273, 33196, 36284, 52546, 105092, 107887, 117923, 215774, 235846, 390053, 431548, 471692, 780106, 1560212, 5070689, 10141378, 20282756]

約数ペア:

[(1, 20282756), (2, 10141378), (4, 5070689), (13, 1560212), (26, 780106), (43, 471692), (47, 431548), (52, 390053), (86, 235846), (94, 215774), (172, 117923), (188, 107887), (193, 105092), (386, 52546), (559, 36284), (611, 33196), (772, 26273), (1118, 18142), (1222, 16598), (2021, 10036), (2236, 9071), (2444, 8299), (2509, 8084), (4042, 5018)]