69988900

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{6421}}^1$

素因数の和:6544

約数の個数: 36

約数和(自身を含む): 153293140

約数和(自身を除く): 83304240

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 2180, 2725, 5450, 6421, 10900, 12842, 25684, 32105, 64210, 128420, 160525, 321050, 642100, 699889, 1399778, 2799556, 3499445, 6998890, 13997780, 17497225, 34994450, 69988900]

約数ペア:

[(1, 69988900), (2, 34994450), (4, 17497225), (5, 13997780), (10, 6998890), (20, 3499445), (25, 2799556), (50, 1399778), (100, 699889), (109, 642100), (218, 321050), (436, 160525), (545, 128420), (1090, 64210), (2180, 32105), (2725, 25684), (5450, 12842), (6421, 10900)]