19689880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70321}}^1$

素因数の和:70339

約数の個数: 32

約数和(自身を含む): 50631840

約数和(自身を除く): 30941960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70321, 140642, 281284, 351605, 492247, 562568, 703210, 984494, 1406420, 1968988, 2461235, 2812840, 3937976, 4922470, 9844940, 19689880]

約数ペア:

[(1, 19689880), (2, 9844940), (4, 4922470), (5, 3937976), (7, 2812840), (8, 2461235), (10, 1968988), (14, 1406420), (20, 984494), (28, 703210), (35, 562568), (40, 492247), (56, 351605), (70, 281284), (140, 140642), (280, 70321)]