21751750

素因数分解:

$2^1\times 5^3\times {\mathrm{167}}^1\times {\mathrm{521}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 41041728

約数和(自身を除く): 19289978

約数列:

[1, 2, 5, 10, 25, 50, 125, 167, 250, 334, 521, 835, 1042, 1670, 2605, 4175, 5210, 8350, 13025, 20875, 26050, 41750, 65125, 87007, 130250, 174014, 435035, 870070, 2175175, 4350350, 10875875, 21751750]

約数ペア:

[(1, 21751750), (2, 10875875), (5, 4350350), (10, 2175175), (25, 870070), (50, 435035), (125, 174014), (167, 130250), (250, 87007), (334, 65125), (521, 41750), (835, 26050), (1042, 20875), (1670, 13025), (2605, 8350), (4175, 5210)]