201771780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{480409}}^1$

素因数の和:480428

約数の個数: 48

約数和(自身を含む): 645671040

約数和(自身を除く): 443899260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 480409, 960818, 1441227, 1921636, 2402045, 2882454, 3362863, 4804090, 5764908, 6725726, 7206135, 9608180, 10088589, 13451452, 14412270, 16814315, 20177178, 28824540, 33628630, 40354356, 50442945, 67257260, 100885890, 201771780]

約数ペア:

[(1, 201771780), (2, 100885890), (3, 67257260), (4, 50442945), (5, 40354356), (6, 33628630), (7, 28824540), (10, 20177178), (12, 16814315), (14, 14412270), (15, 13451452), (20, 10088589), (21, 9608180), (28, 7206135), (30, 6725726), (35, 5764908), (42, 4804090), (60, 3362863), (70, 2882454), (84, 2402045), (105, 1921636), (140, 1441227), (210, 960818), (420, 480409)]