20013448

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:806

約数の個数: 64

約数和(自身を含む): 47496960

約数和(自身を除く): 27483512

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 37, 52, 56, 74, 91, 104, 148, 182, 259, 296, 364, 481, 518, 728, 743, 962, 1036, 1486, 1924, 2072, 2972, 3367, 3848, 5201, 5944, 6734, 9659, 10402, 13468, 19318, 20804, 26936, 27491, 38636, 41608, 54982, 67613, 77272, 109964, 135226, 192437, 219928, 270452, 357383, 384874, 540904, 714766, 769748, 1429532, 1539496, 2501681, 2859064, 5003362, 10006724, 20013448]

約数ペア:

[(1, 20013448), (2, 10006724), (4, 5003362), (7, 2859064), (8, 2501681), (13, 1539496), (14, 1429532), (26, 769748), (28, 714766), (37, 540904), (52, 384874), (56, 357383), (74, 270452), (91, 219928), (104, 192437), (148, 135226), (182, 109964), (259, 77272), (296, 67613), (364, 54982), (481, 41608), (518, 38636), (728, 27491), (743, 26936), (962, 20804), (1036, 19318), (1486, 13468), (1924, 10402), (2072, 9659), (2972, 6734), (3367, 5944), (3848, 5201)]