20456212

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 42561792

約数和(自身を除く): 22105580

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 103, 164, 173, 206, 287, 346, 412, 574, 692, 721, 1148, 1211, 1442, 2422, 2884, 4223, 4844, 7093, 8446, 14186, 16892, 17819, 28372, 29561, 35638, 49651, 59122, 71276, 99302, 118244, 124733, 198604, 249466, 498932, 730579, 1461158, 2922316, 5114053, 10228106, 20456212]

約数ペア:

[(1, 20456212), (2, 10228106), (4, 5114053), (7, 2922316), (14, 1461158), (28, 730579), (41, 498932), (82, 249466), (103, 198604), (164, 124733), (173, 118244), (206, 99302), (287, 71276), (346, 59122), (412, 49651), (574, 35638), (692, 29561), (721, 28372), (1148, 17819), (1211, 16892), (1442, 14186), (2422, 8446), (2884, 7093), (4223, 4844)]