18998805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{7867}}^1$

素因数の和:7905

約数の個数: 32

約数和(自身を含む): 36255744

約数和(自身を除く): 17256939

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 7867, 23601, 39335, 55069, 118005, 165207, 180941, 275345, 542823, 826035, 904705, 1266587, 2714115, 3799761, 6332935, 18998805]

約数ペア:

[(1, 18998805), (3, 6332935), (5, 3799761), (7, 2714115), (15, 1266587), (21, 904705), (23, 826035), (35, 542823), (69, 275345), (105, 180941), (115, 165207), (161, 118005), (345, 55069), (483, 39335), (805, 23601), (2415, 7867)]