19904895

素因数分解:

$3^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{701}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 34605792

約数和(自身を除く): 14700897

約数列:

[1, 3, 5, 9, 15, 45, 631, 701, 1893, 2103, 3155, 3505, 5679, 6309, 9465, 10515, 28395, 31545, 442331, 1326993, 2211655, 3980979, 6634965, 19904895]

約数ペア:

[(1, 19904895), (3, 6634965), (5, 3980979), (9, 2211655), (15, 1326993), (45, 442331), (631, 31545), (701, 28395), (1893, 10515), (2103, 9465), (3155, 6309), (3505, 5679)]