18705995

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{631}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 28747152

約数和(自身を除く): 10041157

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 121, 245, 385, 539, 605, 631, 847, 2695, 3155, 4235, 4417, 5929, 6941, 22085, 29645, 30919, 34705, 48587, 76351, 154595, 242935, 340109, 381755, 534457, 1700545, 2672285, 3741199, 18705995]

約数ペア:

[(1, 18705995), (5, 3741199), (7, 2672285), (11, 1700545), (35, 534457), (49, 381755), (55, 340109), (77, 242935), (121, 154595), (245, 76351), (385, 48587), (539, 34705), (605, 30919), (631, 29645), (847, 22085), (2695, 6941), (3155, 5929), (4235, 4417)]