21341715

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{659}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15153645

約数列:

[1, 3, 5, 15, 17, 51, 85, 127, 255, 381, 635, 659, 1905, 1977, 2159, 3295, 6477, 9885, 10795, 11203, 32385, 33609, 56015, 83693, 168045, 251079, 418465, 1255395, 1422781, 4268343, 7113905, 21341715]

約数ペア:

[(1, 21341715), (3, 7113905), (5, 4268343), (15, 1422781), (17, 1255395), (51, 418465), (85, 251079), (127, 168045), (255, 83693), (381, 56015), (635, 33609), (659, 32385), (1905, 11203), (1977, 10795), (2159, 9885), (3295, 6477)]