21375420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:395

約数の個数: 96

約数和(自身を含む): 66044160

約数和(自身を除く): 44668740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 139, 165, 220, 233, 278, 330, 417, 466, 556, 660, 695, 699, 834, 932, 1165, 1390, 1398, 1529, 1668, 2085, 2330, 2563, 2780, 2796, 3058, 3495, 4170, 4587, 4660, 5126, 6116, 6990, 7645, 7689, 8340, 9174, 10252, 12815, 13980, 15290, 15378, 18348, 22935, 25630, 30580, 30756, 32387, 38445, 45870, 51260, 64774, 76890, 91740, 97161, 129548, 153780, 161935, 194322, 323870, 356257, 388644, 485805, 647740, 712514, 971610, 1068771, 1425028, 1781285, 1943220, 2137542, 3562570, 4275084, 5343855, 7125140, 10687710, 21375420]

約数ペア:

[(1, 21375420), (2, 10687710), (3, 7125140), (4, 5343855), (5, 4275084), (6, 3562570), (10, 2137542), (11, 1943220), (12, 1781285), (15, 1425028), (20, 1068771), (22, 971610), (30, 712514), (33, 647740), (44, 485805), (55, 388644), (60, 356257), (66, 323870), (110, 194322), (132, 161935), (139, 153780), (165, 129548), (220, 97161), (233, 91740), (278, 76890), (330, 64774), (417, 51260), (466, 45870), (556, 38445), (660, 32387), (695, 30756), (699, 30580), (834, 25630), (932, 22935), (1165, 18348), (1390, 15378), (1398, 15290), (1529, 13980), (1668, 12815), (2085, 10252), (2330, 9174), (2563, 8340), (2780, 7689), (2796, 7645), (3058, 6990), (3495, 6116), (4170, 5126), (4587, 4660)]