21159075

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{983}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 40997376

約数和(自身を除く): 19838301

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 983, 1025, 1435, 2949, 3075, 4305, 4915, 6881, 7175, 14745, 20643, 21525, 24575, 34405, 40303, 73725, 103215, 120909, 172025, 201515, 282121, 516075, 604545, 846363, 1007575, 1410605, 3022725, 4231815, 7053025, 21159075]

約数ペア:

[(1, 21159075), (3, 7053025), (5, 4231815), (7, 3022725), (15, 1410605), (21, 1007575), (25, 846363), (35, 604545), (41, 516075), (75, 282121), (105, 201515), (123, 172025), (175, 120909), (205, 103215), (287, 73725), (525, 40303), (615, 34405), (861, 24575), (983, 21525), (1025, 20643), (1435, 14745), (2949, 7175), (3075, 6881), (4305, 4915)]