21302008

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1009}}^1$

素因数の和:1064

約数の個数: 64

約数和(自身を含む): 50904000

約数和(自身を除く): 29601992

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 29, 52, 56, 58, 91, 104, 116, 182, 203, 232, 364, 377, 406, 728, 754, 812, 1009, 1508, 1624, 2018, 2639, 3016, 4036, 5278, 7063, 8072, 10556, 13117, 14126, 21112, 26234, 28252, 29261, 52468, 56504, 58522, 91819, 104936, 117044, 183638, 204827, 234088, 367276, 380393, 409654, 734552, 760786, 819308, 1521572, 1638616, 2662751, 3043144, 5325502, 10651004, 21302008]

約数ペア:

[(1, 21302008), (2, 10651004), (4, 5325502), (7, 3043144), (8, 2662751), (13, 1638616), (14, 1521572), (26, 819308), (28, 760786), (29, 734552), (52, 409654), (56, 380393), (58, 367276), (91, 234088), (104, 204827), (116, 183638), (182, 117044), (203, 104936), (232, 91819), (364, 58522), (377, 56504), (406, 52468), (728, 29261), (754, 28252), (812, 26234), (1009, 21112), (1508, 14126), (1624, 13117), (2018, 10556), (2639, 8072), (3016, 7063), (4036, 5278)]