18890118

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 27074682

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 71, 78, 117, 142, 213, 234, 351, 379, 426, 639, 702, 758, 923, 1137, 1278, 1846, 1917, 2274, 2769, 3411, 3834, 4927, 5538, 6822, 8307, 9854, 10233, 14781, 16614, 20466, 24921, 26909, 29562, 44343, 49842, 53818, 80727, 88686, 133029, 161454, 242181, 266058, 349817, 484362, 699634, 726543, 1049451, 1453086, 2098902, 3148353, 6296706, 9445059, 18890118]

約数ペア:

[(1, 18890118), (2, 9445059), (3, 6296706), (6, 3148353), (9, 2098902), (13, 1453086), (18, 1049451), (26, 726543), (27, 699634), (39, 484362), (54, 349817), (71, 266058), (78, 242181), (117, 161454), (142, 133029), (213, 88686), (234, 80727), (351, 53818), (379, 49842), (426, 44343), (639, 29562), (702, 26909), (758, 24921), (923, 20466), (1137, 16614), (1278, 14781), (1846, 10233), (1917, 9854), (2274, 8307), (2769, 6822), (3411, 5538), (3834, 4927)]