21768045

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 39071232

約数和(自身を除く): 17303187

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 169, 195, 277, 403, 465, 507, 831, 845, 1209, 1385, 2015, 2535, 3601, 4155, 5239, 6045, 8587, 10803, 15717, 18005, 25761, 26195, 42935, 46813, 54015, 78585, 111631, 128805, 140439, 234065, 334893, 558155, 702195, 1451203, 1674465, 4353609, 7256015, 21768045]

約数ペア:

[(1, 21768045), (3, 7256015), (5, 4353609), (13, 1674465), (15, 1451203), (31, 702195), (39, 558155), (65, 334893), (93, 234065), (155, 140439), (169, 128805), (195, 111631), (277, 78585), (403, 54015), (465, 46813), (507, 42935), (831, 26195), (845, 25761), (1209, 18005), (1385, 15717), (2015, 10803), (2535, 8587), (3601, 6045), (4155, 5239)]