81645252

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 208567296

約数和(自身を除く): 126922044

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 169, 254, 317, 338, 381, 507, 508, 634, 676, 762, 951, 1014, 1268, 1524, 1651, 1902, 2028, 3302, 3804, 4121, 4953, 6604, 8242, 9906, 12363, 16484, 19812, 21463, 24726, 40259, 42926, 49452, 53573, 64389, 80518, 85852, 107146, 120777, 128778, 160719, 161036, 214292, 241554, 257556, 321438, 483108, 523367, 642876, 1046734, 1570101, 2093468, 3140202, 6280404, 6803771, 13607542, 20411313, 27215084, 40822626, 81645252]

約数ペア:

[(1, 81645252), (2, 40822626), (3, 27215084), (4, 20411313), (6, 13607542), (12, 6803771), (13, 6280404), (26, 3140202), (39, 2093468), (52, 1570101), (78, 1046734), (127, 642876), (156, 523367), (169, 483108), (254, 321438), (317, 257556), (338, 241554), (381, 214292), (507, 161036), (508, 160719), (634, 128778), (676, 120777), (762, 107146), (951, 85852), (1014, 80518), (1268, 64389), (1524, 53573), (1651, 49452), (1902, 42926), (2028, 40259), (3302, 24726), (3804, 21463), (4121, 19812), (4953, 16484), (6604, 12363), (8242, 9906)]