19808825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{367}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 26284032

約数和(自身を除く): 6475207

約数列:

[1, 5, 17, 25, 85, 127, 367, 425, 635, 1835, 2159, 3175, 6239, 9175, 10795, 31195, 46609, 53975, 155975, 233045, 792353, 1165225, 3961765, 19808825]

約数ペア:

[(1, 19808825), (5, 3961765), (17, 1165225), (25, 792353), (85, 233045), (127, 155975), (367, 53975), (425, 46609), (635, 31195), (1835, 10795), (2159, 9175), (3175, 6239)]