21292654

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 35038080

約数和(自身を除く): 13745426

約数列:

[1, 2, 19, 38, 43, 83, 86, 157, 166, 314, 817, 1577, 1634, 2983, 3154, 3569, 5966, 6751, 7138, 13031, 13502, 26062, 67811, 128269, 135622, 247589, 256538, 495178, 560333, 1120666, 10646327, 21292654]

約数ペア:

[(1, 21292654), (2, 10646327), (19, 1120666), (38, 560333), (43, 495178), (83, 256538), (86, 247589), (157, 135622), (166, 128269), (314, 67811), (817, 26062), (1577, 13502), (1634, 13031), (2983, 7138), (3154, 6751), (3569, 5966)]