258996980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61961}}^1$

素因数の和:62000

約数の個数: 48

約数和(自身を含む): 624576960

約数和(自身を除く): 365579980

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, 61961, 123922, 247844, 309805, 619610, 681571, 1177259, 1239220, 1363142, 2354518, 2726284, 3407855, 4709036, 5886295, 6815710, 11772590, 12949849, 13631420, 23545180, 25899698, 51799396, 64749245, 129498490, 258996980]

約数ペア:

[(1, 258996980), (2, 129498490), (4, 64749245), (5, 51799396), (10, 25899698), (11, 23545180), (19, 13631420), (20, 12949849), (22, 11772590), (38, 6815710), (44, 5886295), (55, 4709036), (76, 3407855), (95, 2726284), (110, 2354518), (190, 1363142), (209, 1239220), (220, 1177259), (380, 681571), (418, 619610), (836, 309805), (1045, 247844), (2090, 123922), (4180, 61961)]