21925835

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 29486592

約数和(自身を除く): 7560757

約数列:

[1, 5, 17, 31, 53, 85, 155, 157, 265, 527, 785, 901, 1643, 2635, 2669, 4505, 4867, 8215, 8321, 13345, 24335, 27931, 41605, 82739, 139655, 141457, 257951, 413695, 707285, 1289755, 4385167, 21925835]

約数ペア:

[(1, 21925835), (5, 4385167), (17, 1289755), (31, 707285), (53, 413695), (85, 257951), (155, 141457), (157, 139655), (265, 82739), (527, 41605), (785, 27931), (901, 24335), (1643, 13345), (2635, 8321), (2669, 8215), (4505, 4867)]