19807700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{1637}}^1$

素因数の和:1673

約数の個数: 54

約数和(自身を含む): 47274318

約数和(自身を除く): 27466618

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 220, 242, 275, 484, 550, 605, 1100, 1210, 1637, 2420, 3025, 3274, 6050, 6548, 8185, 12100, 16370, 18007, 32740, 36014, 40925, 72028, 81850, 90035, 163700, 180070, 198077, 360140, 396154, 450175, 792308, 900350, 990385, 1800700, 1980770, 3961540, 4951925, 9903850, 19807700]

約数ペア:

[(1, 19807700), (2, 9903850), (4, 4951925), (5, 3961540), (10, 1980770), (11, 1800700), (20, 990385), (22, 900350), (25, 792308), (44, 450175), (50, 396154), (55, 360140), (100, 198077), (110, 180070), (121, 163700), (220, 90035), (242, 81850), (275, 72028), (484, 40925), (550, 36014), (605, 32740), (1100, 18007), (1210, 16370), (1637, 12100), (2420, 8185), (3025, 6548), (3274, 6050)]