18989802

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:225

約数の個数: 80

約数和(自身を含む): 46835712

約数和(自身を除く): 27845910

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 71, 78, 81, 117, 127, 142, 162, 213, 234, 254, 351, 381, 426, 639, 702, 762, 923, 1053, 1143, 1278, 1651, 1846, 1917, 2106, 2286, 2769, 3302, 3429, 3834, 4953, 5538, 5751, 6858, 8307, 9017, 9906, 10287, 11502, 14859, 16614, 18034, 20574, 24921, 27051, 29718, 44577, 49842, 54102, 74763, 81153, 89154, 117221, 133731, 149526, 162306, 234442, 243459, 267462, 351663, 486918, 703326, 730377, 1054989, 1460754, 2109978, 3164967, 6329934, 9494901, 18989802]

約数ペア:

[(1, 18989802), (2, 9494901), (3, 6329934), (6, 3164967), (9, 2109978), (13, 1460754), (18, 1054989), (26, 730377), (27, 703326), (39, 486918), (54, 351663), (71, 267462), (78, 243459), (81, 234442), (117, 162306), (127, 149526), (142, 133731), (162, 117221), (213, 89154), (234, 81153), (254, 74763), (351, 54102), (381, 49842), (426, 44577), (639, 29718), (702, 27051), (762, 24921), (923, 20574), (1053, 18034), (1143, 16614), (1278, 14859), (1651, 11502), (1846, 10287), (1917, 9906), (2106, 9017), (2286, 8307), (2769, 6858), (3302, 5751), (3429, 5538), (3834, 4953)]