81078950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:258

約数の個数: 72

約数和(自身を含む): 166281024

約数和(自身を除く): 85202074

約数列:

[1, 2, 5, 10, 17, 25, 31, 34, 50, 62, 85, 155, 170, 181, 289, 310, 362, 425, 527, 578, 775, 850, 905, 1054, 1445, 1550, 1810, 2635, 2890, 3077, 4525, 5270, 5611, 6154, 7225, 8959, 9050, 11222, 13175, 14450, 15385, 17918, 26350, 28055, 30770, 44795, 52309, 56110, 76925, 89590, 95387, 104618, 140275, 153850, 190774, 223975, 261545, 280550, 447950, 476935, 523090, 953870, 1307725, 1621579, 2384675, 2615450, 3243158, 4769350, 8107895, 16215790, 40539475, 81078950]

約数ペア:

[(1, 81078950), (2, 40539475), (5, 16215790), (10, 8107895), (17, 4769350), (25, 3243158), (31, 2615450), (34, 2384675), (50, 1621579), (62, 1307725), (85, 953870), (155, 523090), (170, 476935), (181, 447950), (289, 280550), (310, 261545), (362, 223975), (425, 190774), (527, 153850), (578, 140275), (775, 104618), (850, 95387), (905, 89590), (1054, 76925), (1445, 56110), (1550, 52309), (1810, 44795), (2635, 30770), (2890, 28055), (3077, 26350), (4525, 17918), (5270, 15385), (5611, 14450), (6154, 13175), (7225, 11222), (8959, 9050)]