19542855

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{739}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 13277625

約数列:

[1, 3, 5, 15, 41, 43, 123, 129, 205, 215, 615, 645, 739, 1763, 2217, 3695, 5289, 8815, 11085, 26445, 30299, 31777, 90897, 95331, 151495, 158885, 454485, 476655, 1302857, 3908571, 6514285, 19542855]

約数ペア:

[(1, 19542855), (3, 6514285), (5, 3908571), (15, 1302857), (41, 476655), (43, 454485), (123, 158885), (129, 151495), (205, 95331), (215, 90897), (615, 31777), (645, 30299), (739, 26445), (1763, 11085), (2217, 8815), (3695, 5289)]