21397770

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{26417}}^1$

素因数の和:26436

約数の個数: 40

約数和(自身を含む): 57538404

約数和(自身を除く): 36140634

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 26417, 52834, 79251, 132085, 158502, 237753, 264170, 396255, 475506, 713259, 792510, 1188765, 1426518, 2139777, 2377530, 3566295, 4279554, 7132590, 10698885, 21397770]

約数ペア:

[(1, 21397770), (2, 10698885), (3, 7132590), (5, 4279554), (6, 3566295), (9, 2377530), (10, 2139777), (15, 1426518), (18, 1188765), (27, 792510), (30, 713259), (45, 475506), (54, 396255), (81, 264170), (90, 237753), (135, 158502), (162, 132085), (270, 79251), (405, 52834), (810, 26417)]