81904375

素因数分解:

$5^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:317

約数の個数: 40

約数和(自身を含む): 118786976

約数和(自身を除く): 36882601

約数列:

[1, 5, 7, 25, 35, 97, 125, 175, 193, 485, 625, 679, 875, 965, 1351, 2425, 3395, 4375, 4825, 6755, 12125, 16975, 18721, 24125, 33775, 60625, 84875, 93605, 120625, 131047, 168875, 424375, 468025, 655235, 844375, 2340125, 3276175, 11700625, 16380875, 81904375]

約数ペア:

[(1, 81904375), (5, 16380875), (7, 11700625), (25, 3276175), (35, 2340125), (97, 844375), (125, 655235), (175, 468025), (193, 424375), (485, 168875), (625, 131047), (679, 120625), (875, 93605), (965, 84875), (1351, 60625), (2425, 33775), (3395, 24125), (4375, 18721), (4825, 16975), (6755, 12125)]