9782840

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1229}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 22140000

約数和(自身を除く): 12357160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1229, 1592, 1990, 2458, 3980, 4916, 6145, 7960, 9832, 12290, 24580, 49160, 244571, 489142, 978284, 1222855, 1956568, 2445710, 4891420, 9782840]

約数ペア:

[(1, 9782840), (2, 4891420), (4, 2445710), (5, 1956568), (8, 1222855), (10, 978284), (20, 489142), (40, 244571), (199, 49160), (398, 24580), (796, 12290), (995, 9832), (1229, 7960), (1592, 6145), (1990, 4916), (2458, 3980)]