20175725375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{19739}}^1$

素因数の和:19821

約数の個数: 64

約数和(自身を含む): 29488717440

約数和(自身を除く): 9312992065

約数列:

[1, 5, 13, 17, 25, 37, 65, 85, 125, 185, 221, 325, 425, 481, 629, 925, 1105, 1625, 2125, 2405, 3145, 4625, 5525, 8177, 12025, 15725, 19739, 27625, 40885, 60125, 78625, 98695, 204425, 256607, 335563, 493475, 730343, 1022125, 1283035, 1677815, 2467375, 3651715, 4362319, 6415175, 8389075, 9494459, 12415831, 18258575, 21811595, 32075875, 41945375, 47472295, 62079155, 91292875, 109057975, 161405803, 237361475, 310395775, 545289875, 807029015, 1186807375, 1551978875, 4035145075, 20175725375]

約数ペア:

[(1, 20175725375), (5, 4035145075), (13, 1551978875), (17, 1186807375), (25, 807029015), (37, 545289875), (65, 310395775), (85, 237361475), (125, 161405803), (185, 109057975), (221, 91292875), (325, 62079155), (425, 47472295), (481, 41945375), (629, 32075875), (925, 21811595), (1105, 18258575), (1625, 12415831), (2125, 9494459), (2405, 8389075), (3145, 6415175), (4625, 4362319), (5525, 3651715), (8177, 2467375), (12025, 1677815), (15725, 1283035), (19739, 1022125), (27625, 730343), (40885, 493475), (60125, 335563), (78625, 256607), (98695, 204425)]