21494820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3547}}^1$

素因数の和:3660

約数の個数: 48

約数和(自身を含む): 60798528

約数和(自身を除く): 39303708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3547, 6060, 7094, 10641, 14188, 17735, 21282, 35470, 42564, 53205, 70940, 106410, 212820, 358247, 716494, 1074741, 1432988, 1791235, 2149482, 3582470, 4298964, 5373705, 7164940, 10747410, 21494820]

約数ペア:

[(1, 21494820), (2, 10747410), (3, 7164940), (4, 5373705), (5, 4298964), (6, 3582470), (10, 2149482), (12, 1791235), (15, 1432988), (20, 1074741), (30, 716494), (60, 358247), (101, 212820), (202, 106410), (303, 70940), (404, 53205), (505, 42564), (606, 35470), (1010, 21282), (1212, 17735), (1515, 14188), (2020, 10641), (3030, 7094), (3547, 6060)]