128839220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{3343}}^1$

素因数の和:3440

約数の個数: 48

約数和(自身を含む): 283143168

約数和(自身を除く): 154303948

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 470, 820, 940, 1927, 3343, 3854, 6686, 7708, 9635, 13372, 16715, 19270, 33430, 38540, 66860, 137063, 157121, 274126, 314242, 548252, 628484, 685315, 785605, 1370630, 1571210, 2741260, 3142420, 6441961, 12883922, 25767844, 32209805, 64419610, 128839220]

約数ペア:

[(1, 128839220), (2, 64419610), (4, 32209805), (5, 25767844), (10, 12883922), (20, 6441961), (41, 3142420), (47, 2741260), (82, 1571210), (94, 1370630), (164, 785605), (188, 685315), (205, 628484), (235, 548252), (410, 314242), (470, 274126), (820, 157121), (940, 137063), (1927, 66860), (3343, 38540), (3854, 33430), (6686, 19270), (7708, 16715), (9635, 13372)]