21535670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12743}}^1$

素因数の和:12776

約数の個数: 24

約数和(自身を含む): 41978736

約数和(自身を除く): 20443066

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12743, 25486, 63715, 127430, 165659, 331318, 828295, 1656590, 2153567, 4307134, 10767835, 21535670]

約数ペア:

[(1, 21535670), (2, 10767835), (5, 4307134), (10, 2153567), (13, 1656590), (26, 828295), (65, 331318), (130, 165659), (169, 127430), (338, 63715), (845, 25486), (1690, 12743)]