21263865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3821}}^1$

素因数の和:3889

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18362631

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3821, 5565, 11463, 19105, 26747, 57315, 80241, 133735, 202513, 401205, 607539, 1012565, 1417591, 3037695, 4252773, 7087955, 21263865]

約数ペア:

[(1, 21263865), (3, 7087955), (5, 4252773), (7, 3037695), (15, 1417591), (21, 1012565), (35, 607539), (53, 401205), (105, 202513), (159, 133735), (265, 80241), (371, 57315), (795, 26747), (1113, 19105), (1855, 11463), (3821, 5565)]