261808855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{18379}}^1$

素因数の和:18439

約数の個数: 32

約数和(自身を含む): 402301440

約数和(自身を除く): 140492585

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 2035, 2849, 14245, 18379, 91895, 128653, 202169, 643265, 680023, 1010845, 1415183, 3400115, 4760161, 7075915, 7480253, 23800805, 37401265, 52361771, 261808855]

約数ペア:

[(1, 261808855), (5, 52361771), (7, 37401265), (11, 23800805), (35, 7480253), (37, 7075915), (55, 4760161), (77, 3400115), (185, 1415183), (259, 1010845), (385, 680023), (407, 643265), (1295, 202169), (2035, 128653), (2849, 91895), (14245, 18379)]