7780780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{373}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 18849600

約数和(自身を除く): 11068820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 373, 596, 745, 746, 1043, 1490, 1492, 1865, 2086, 2611, 2980, 3730, 4172, 5215, 5222, 7460, 10430, 10444, 13055, 20860, 26110, 52220, 55577, 111154, 222308, 277885, 389039, 555770, 778078, 1111540, 1556156, 1945195, 3890390, 7780780]

約数ペア:

[(1, 7780780), (2, 3890390), (4, 1945195), (5, 1556156), (7, 1111540), (10, 778078), (14, 555770), (20, 389039), (28, 277885), (35, 222308), (70, 111154), (140, 55577), (149, 52220), (298, 26110), (373, 20860), (596, 13055), (745, 10444), (746, 10430), (1043, 7460), (1490, 5222), (1492, 5215), (1865, 4172), (2086, 3730), (2611, 2980)]