22720985

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 32980992

約数和(自身を除く): 10260007

約数列:

[1, 5, 7, 31, 35, 43, 155, 215, 217, 301, 487, 1085, 1333, 1505, 2435, 3409, 6665, 9331, 15097, 17045, 20941, 46655, 75485, 104705, 105679, 146587, 528395, 649171, 732935, 3245855, 4544197, 22720985]

約数ペア:

[(1, 22720985), (5, 4544197), (7, 3245855), (31, 732935), (35, 649171), (43, 528395), (155, 146587), (215, 105679), (217, 104705), (301, 75485), (487, 46655), (1085, 20941), (1333, 17045), (1505, 15097), (2435, 9331), (3409, 6665)]