2005204825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:671

約数の個数: 72

約数和(自身を含む): 2926439432

約数和(自身を除く): 921234607

約数列:

[1, 5, 13, 17, 25, 37, 65, 85, 185, 221, 289, 325, 425, 481, 577, 629, 925, 1105, 1445, 2405, 2885, 3145, 3757, 5525, 7225, 7501, 8177, 9809, 10693, 12025, 14425, 15725, 18785, 21349, 37505, 40885, 49045, 53465, 93925, 106745, 127517, 139009, 166753, 187525, 204425, 245225, 267325, 277537, 362933, 533725, 637585, 695045, 833765, 1387685, 1814665, 2167789, 3187925, 3475225, 4168825, 4718129, 6169861, 6938425, 9073325, 10838945, 23590645, 30849305, 54194725, 80208193, 117953225, 154246525, 401040965, 2005204825]

約数ペア:

[(1, 2005204825), (5, 401040965), (13, 154246525), (17, 117953225), (25, 80208193), (37, 54194725), (65, 30849305), (85, 23590645), (185, 10838945), (221, 9073325), (289, 6938425), (325, 6169861), (425, 4718129), (481, 4168825), (577, 3475225), (629, 3187925), (925, 2167789), (1105, 1814665), (1445, 1387685), (2405, 833765), (2885, 695045), (3145, 637585), (3757, 533725), (5525, 362933), (7225, 277537), (7501, 267325), (8177, 245225), (9809, 204425), (10693, 187525), (12025, 166753), (14425, 139009), (15725, 127517), (18785, 106745), (21349, 93925), (37505, 53465), (40885, 49045)]