21418985

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1039}}^1$

素因数の和:1101

約数の個数: 32

約数和(自身を含む): 31948800

約数和(自身を除く): 10529815

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1039, 1085, 2945, 4123, 5195, 7273, 19741, 20615, 32209, 36365, 98705, 138187, 161045, 225463, 611971, 690935, 1127315, 3059855, 4283797, 21418985]

約数ペア:

[(1, 21418985), (5, 4283797), (7, 3059855), (19, 1127315), (31, 690935), (35, 611971), (95, 225463), (133, 161045), (155, 138187), (217, 98705), (589, 36365), (665, 32209), (1039, 20615), (1085, 19741), (2945, 7273), (4123, 5195)]