81144420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193201}}^1$

素因数の和:193220

約数の個数: 48

約数和(自身を含む): 259663488

約数和(自身を除く): 178519068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193201, 386402, 579603, 772804, 966005, 1159206, 1352407, 1932010, 2318412, 2704814, 2898015, 3864020, 4057221, 5409628, 5796030, 6762035, 8114442, 11592060, 13524070, 16228884, 20286105, 27048140, 40572210, 81144420]

約数ペア:

[(1, 81144420), (2, 40572210), (3, 27048140), (4, 20286105), (5, 16228884), (6, 13524070), (7, 11592060), (10, 8114442), (12, 6762035), (14, 5796030), (15, 5409628), (20, 4057221), (21, 3864020), (28, 2898015), (30, 2704814), (35, 2318412), (42, 1932010), (60, 1352407), (70, 1159206), (84, 966005), (105, 772804), (140, 579603), (210, 386402), (420, 193201)]