19578920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13229}}^1$

素因数の和:13277

約数の個数: 32

約数和(自身を含む): 45246600

約数和(自身を除く): 25667680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13229, 26458, 52916, 66145, 105832, 132290, 264580, 489473, 529160, 978946, 1957892, 2447365, 3915784, 4894730, 9789460, 19578920]

約数ペア:

[(1, 19578920), (2, 9789460), (4, 4894730), (5, 3915784), (8, 2447365), (10, 1957892), (20, 978946), (37, 529160), (40, 489473), (74, 264580), (148, 132290), (185, 105832), (296, 66145), (370, 52916), (740, 26458), (1480, 13229)]