207978375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 381468672

約数和(自身を除く): 173490297

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 127, 165, 275, 375, 381, 397, 635, 825, 1191, 1375, 1397, 1905, 1985, 3175, 4125, 4191, 4367, 5955, 6985, 9525, 9925, 13101, 15875, 20955, 21835, 29775, 34925, 47625, 49625, 50419, 65505, 104775, 109175, 148875, 151257, 174625, 252095, 327525, 523875, 545875, 554609, 756285, 1260475, 1637625, 1663827, 2773045, 3781425, 6302375, 8319135, 13865225, 18907125, 41595675, 69326125, 207978375]

約数ペア:

[(1, 207978375), (3, 69326125), (5, 41595675), (11, 18907125), (15, 13865225), (25, 8319135), (33, 6302375), (55, 3781425), (75, 2773045), (125, 1663827), (127, 1637625), (165, 1260475), (275, 756285), (375, 554609), (381, 545875), (397, 523875), (635, 327525), (825, 252095), (1191, 174625), (1375, 151257), (1397, 148875), (1905, 109175), (1985, 104775), (3175, 65505), (4125, 50419), (4191, 49625), (4367, 47625), (5955, 34925), (6985, 29775), (9525, 21835), (9925, 20955), (13101, 15875)]