18882915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{523}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 12808605

約数列:

[1, 3, 5, 15, 29, 83, 87, 145, 249, 415, 435, 523, 1245, 1569, 2407, 2615, 7221, 7845, 12035, 15167, 36105, 43409, 45501, 75835, 130227, 217045, 227505, 651135, 1258861, 3776583, 6294305, 18882915]

約数ペア:

[(1, 18882915), (3, 6294305), (5, 3776583), (15, 1258861), (29, 651135), (83, 227505), (87, 217045), (145, 130227), (249, 75835), (415, 45501), (435, 43409), (523, 36105), (1245, 15167), (1569, 12035), (2407, 7845), (2615, 7221)]