20193580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4831}}^1$

素因数の和:4870

約数の個数: 48

約数和(自身を含む): 48706560

約数和(自身を除く): 28512980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4831, 9662, 19324, 24155, 48310, 53141, 91789, 96620, 106282, 183578, 212564, 265705, 367156, 458945, 531410, 917890, 1009679, 1062820, 1835780, 2019358, 4038716, 5048395, 10096790, 20193580]

約数ペア:

[(1, 20193580), (2, 10096790), (4, 5048395), (5, 4038716), (10, 2019358), (11, 1835780), (19, 1062820), (20, 1009679), (22, 917890), (38, 531410), (44, 458945), (55, 367156), (76, 265705), (95, 212564), (110, 183578), (190, 106282), (209, 96620), (220, 91789), (380, 53141), (418, 48310), (836, 24155), (1045, 19324), (2090, 9662), (4180, 4831)]