990871605

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{8693}}^1$

素因数の和:8870

約数の個数: 48

約数和(自身を含む): 1830956400

約数和(自身を除く): 840084795

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 149, 153, 255, 447, 745, 765, 1341, 2235, 2533, 6705, 7599, 8693, 12665, 22797, 26079, 37995, 43465, 78237, 113985, 130395, 147781, 391185, 443343, 738905, 1295257, 1330029, 2216715, 3885771, 6476285, 6650145, 11657313, 19428855, 22019369, 58286565, 66058107, 110096845, 198174321, 330290535, 990871605]

約数ペア:

[(1, 990871605), (3, 330290535), (5, 198174321), (9, 110096845), (15, 66058107), (17, 58286565), (45, 22019369), (51, 19428855), (85, 11657313), (149, 6650145), (153, 6476285), (255, 3885771), (447, 2216715), (745, 1330029), (765, 1295257), (1341, 738905), (2235, 443343), (2533, 391185), (6705, 147781), (7599, 130395), (8693, 113985), (12665, 78237), (22797, 43465), (26079, 37995)]