81780676

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{13513}}^1$

素因数の和:13623

約数の個数: 24

約数和(自身を含む): 153248760

約数和(自身を除く): 71468084

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 356, 1513, 3026, 6052, 13513, 27026, 54052, 229721, 459442, 918884, 1202657, 2405314, 4810628, 20445169, 40890338, 81780676]

約数ペア:

[(1, 81780676), (2, 40890338), (4, 20445169), (17, 4810628), (34, 2405314), (68, 1202657), (89, 918884), (178, 459442), (356, 229721), (1513, 54052), (3026, 27026), (6052, 13513)]