17902420

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2039}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 37699200

約数和(自身を除く): 19796780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2039, 2195, 4078, 4390, 8156, 8780, 10195, 20390, 40780, 895121, 1790242, 3580484, 4475605, 8951210, 17902420]

約数ペア:

[(1, 17902420), (2, 8951210), (4, 4475605), (5, 3580484), (10, 1790242), (20, 895121), (439, 40780), (878, 20390), (1756, 10195), (2039, 8780), (2195, 8156), (4078, 4390)]