20379855

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 34776000

約数和(自身を除く): 14396145

約数列:

[1, 3, 5, 15, 17, 51, 85, 229, 255, 349, 687, 1047, 1145, 1745, 3435, 3893, 5235, 5933, 11679, 17799, 19465, 29665, 58395, 79921, 88995, 239763, 399605, 1198815, 1358657, 4075971, 6793285, 20379855]

約数ペア:

[(1, 20379855), (3, 6793285), (5, 4075971), (15, 1358657), (17, 1198815), (51, 399605), (85, 239763), (229, 88995), (255, 79921), (349, 58395), (687, 29665), (1047, 19465), (1145, 17799), (1745, 11679), (3435, 5933), (3893, 5235)]