820897445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1\times {\mathrm{233}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 1057885920

約数和(自身を除く): 236988475

約数列:

[1, 5, 17, 85, 181, 229, 233, 905, 1145, 1165, 3077, 3893, 3961, 15385, 19465, 19805, 41449, 42173, 53357, 207245, 210865, 266785, 704633, 716941, 907069, 3523165, 3584705, 4535345, 9657617, 48288085, 164179489, 820897445]

約数ペア:

[(1, 820897445), (5, 164179489), (17, 48288085), (85, 9657617), (181, 4535345), (229, 3584705), (233, 3523165), (905, 907069), (1145, 716941), (1165, 704633), (3077, 266785), (3893, 210865), (3961, 207245), (15385, 53357), (19465, 42173), (19805, 41449)]