81892020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194981}}^1$

素因数の和:195000

約数の個数: 48

約数和(自身を含む): 262055808

約数和(自身を除く): 180163788

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, 194981, 389962, 584943, 779924, 974905, 1169886, 1364867, 1949810, 2339772, 2729734, 2924715, 3899620, 4094601, 5459468, 5849430, 6824335, 8189202, 11698860, 13648670, 16378404, 20473005, 27297340, 40946010, 81892020]

約数ペア:

[(1, 81892020), (2, 40946010), (3, 27297340), (4, 20473005), (5, 16378404), (6, 13648670), (7, 11698860), (10, 8189202), (12, 6824335), (14, 5849430), (15, 5459468), (20, 4094601), (21, 3899620), (28, 2924715), (30, 2729734), (35, 2339772), (42, 1949810), (60, 1364867), (70, 1169886), (84, 974905), (105, 779924), (140, 584943), (210, 389962), (420, 194981)]