20807787

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{41}}^1$

素因数の和:101

約数の個数: 64

約数和(自身を含む): 38384640

約数和(自身を除く): 17576853

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 41, 77, 91, 123, 143, 169, 231, 273, 287, 429, 451, 507, 533, 861, 1001, 1183, 1353, 1599, 1859, 2197, 3003, 3157, 3549, 3731, 5577, 5863, 6591, 6929, 9471, 11193, 13013, 15379, 17589, 20787, 24167, 39039, 41041, 46137, 48503, 72501, 76219, 90077, 123123, 145509, 169169, 228657, 270231, 507507, 533533, 630539, 990847, 1600599, 1891617, 2972541, 6935929, 20807787]

約数ペア:

[(1, 20807787), (3, 6935929), (7, 2972541), (11, 1891617), (13, 1600599), (21, 990847), (33, 630539), (39, 533533), (41, 507507), (77, 270231), (91, 228657), (123, 169169), (143, 145509), (169, 123123), (231, 90077), (273, 76219), (287, 72501), (429, 48503), (451, 46137), (507, 41041), (533, 39039), (861, 24167), (1001, 20787), (1183, 17589), (1353, 15379), (1599, 13013), (1859, 11193), (2197, 9471), (3003, 6929), (3157, 6591), (3549, 5863), (3731, 5577)]