18909972

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 50450400

約数和(自身を除く): 31540428

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 59, 87, 116, 118, 174, 177, 236, 261, 307, 348, 354, 522, 531, 614, 708, 921, 1044, 1062, 1228, 1711, 1842, 2124, 2763, 3422, 3684, 5133, 5526, 6844, 8903, 10266, 11052, 15399, 17806, 18113, 20532, 26709, 30798, 35612, 36226, 53418, 54339, 61596, 72452, 80127, 106836, 108678, 160254, 163017, 217356, 320508, 326034, 525277, 652068, 1050554, 1575831, 2101108, 3151662, 4727493, 6303324, 9454986, 18909972]

約数ペア:

[(1, 18909972), (2, 9454986), (3, 6303324), (4, 4727493), (6, 3151662), (9, 2101108), (12, 1575831), (18, 1050554), (29, 652068), (36, 525277), (58, 326034), (59, 320508), (87, 217356), (116, 163017), (118, 160254), (174, 108678), (177, 106836), (236, 80127), (261, 72452), (307, 61596), (348, 54339), (354, 53418), (522, 36226), (531, 35612), (614, 30798), (708, 26709), (921, 20532), (1044, 18113), (1062, 17806), (1228, 15399), (1711, 11052), (1842, 10266), (2124, 8903), (2763, 6844), (3422, 5526), (3684, 5133)]