19915818

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{821}}^1$

素因数の和:1150

約数の個数: 32

約数和(自身を含む): 43085952

約数和(自身を除く): 23170134

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 311, 622, 821, 933, 1642, 1866, 2463, 4043, 4926, 8086, 10673, 12129, 21346, 24258, 32019, 64038, 255331, 510662, 765993, 1531986, 3319303, 6638606, 9957909, 19915818]

約数ペア:

[(1, 19915818), (2, 9957909), (3, 6638606), (6, 3319303), (13, 1531986), (26, 765993), (39, 510662), (78, 255331), (311, 64038), (622, 32019), (821, 24258), (933, 21346), (1642, 12129), (1866, 10673), (2463, 8086), (4043, 4926)]