21512440

素因数分解:

$2^3\times 5^1\times {\mathrm{537811}}^1$

素因数の和:537822

約数の個数: 16

約数和(自身を含む): 48403080

約数和(自身を除く): 26890640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537811, 1075622, 2151244, 2689055, 4302488, 5378110, 10756220, 21512440]

約数ペア:

[(1, 21512440), (2, 10756220), (4, 5378110), (5, 4302488), (8, 2689055), (10, 2151244), (20, 1075622), (40, 537811)]