21104615

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 30497280

約数和(自身を除く): 9392665

約数列:

[1, 5, 7, 35, 37, 43, 185, 215, 259, 301, 379, 1295, 1505, 1591, 1895, 2653, 7955, 11137, 13265, 14023, 16297, 55685, 70115, 81485, 98161, 114079, 490805, 570395, 602989, 3014945, 4220923, 21104615]

約数ペア:

[(1, 21104615), (5, 4220923), (7, 3014945), (35, 602989), (37, 570395), (43, 490805), (185, 114079), (215, 98161), (259, 81485), (301, 70115), (379, 55685), (1295, 16297), (1505, 14023), (1591, 13265), (1895, 11137), (2653, 7955)]