21406356

素因数分解:

$2^2\times 3^7\times {\mathrm{2447}}^1$

素因数の和:2472

約数の個数: 48

約数和(自身を含む): 56206080

約数和(自身を除く): 34799724

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2187, 2447, 2916, 4374, 4894, 7341, 8748, 9788, 14682, 22023, 29364, 44046, 66069, 88092, 132138, 198207, 264276, 396414, 594621, 792828, 1189242, 1783863, 2378484, 3567726, 5351589, 7135452, 10703178, 21406356]

約数ペア:

[(1, 21406356), (2, 10703178), (3, 7135452), (4, 5351589), (6, 3567726), (9, 2378484), (12, 1783863), (18, 1189242), (27, 792828), (36, 594621), (54, 396414), (81, 264276), (108, 198207), (162, 132138), (243, 88092), (324, 66069), (486, 44046), (729, 29364), (972, 22023), (1458, 14682), (2187, 9788), (2447, 8748), (2916, 7341), (4374, 4894)]