31219935

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 51744000

約数和(自身を除く): 20524065

約数列:

[1, 3, 5, 15, 43, 97, 129, 215, 291, 485, 499, 645, 1455, 1497, 2495, 4171, 7485, 12513, 20855, 21457, 48403, 62565, 64371, 107285, 145209, 242015, 321855, 726045, 2081329, 6243987, 10406645, 31219935]

約数ペア:

[(1, 31219935), (3, 10406645), (5, 6243987), (15, 2081329), (43, 726045), (97, 321855), (129, 242015), (215, 145209), (291, 107285), (485, 64371), (499, 62565), (645, 48403), (1455, 21457), (1497, 20855), (2495, 12513), (4171, 7485)]