18664568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{911}}^1$

素因数の和:1127

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 19256392

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 911, 1576, 1822, 2561, 3644, 5122, 7288, 10244, 11843, 20488, 23686, 47372, 94744, 179467, 358934, 717868, 1435736, 2333071, 4666142, 9332284, 18664568]

約数ペア:

[(1, 18664568), (2, 9332284), (4, 4666142), (8, 2333071), (13, 1435736), (26, 717868), (52, 358934), (104, 179467), (197, 94744), (394, 47372), (788, 23686), (911, 20488), (1576, 11843), (1822, 10244), (2561, 7288), (3644, 5122)]