20166980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 45252480

約数和(自身を除く): 25085500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 365, 380, 727, 730, 1387, 1454, 1460, 2774, 2908, 3635, 5548, 6935, 7270, 13813, 13870, 14540, 27626, 27740, 53071, 55252, 69065, 106142, 138130, 212284, 265355, 276260, 530710, 1008349, 1061420, 2016698, 4033396, 5041745, 10083490, 20166980]

約数ペア:

[(1, 20166980), (2, 10083490), (4, 5041745), (5, 4033396), (10, 2016698), (19, 1061420), (20, 1008349), (38, 530710), (73, 276260), (76, 265355), (95, 212284), (146, 138130), (190, 106142), (292, 69065), (365, 55252), (380, 53071), (727, 27740), (730, 27626), (1387, 14540), (1454, 13870), (1460, 13813), (2774, 7270), (2908, 6935), (3635, 5548)]