209812516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{31019}}^1$

素因数の和:31131

約数の個数: 24

約数和(自身を含む): 390852000

約数和(自身を除く): 181039484

約数列:

[1, 2, 4, 19, 38, 76, 89, 178, 356, 1691, 3382, 6764, 31019, 62038, 124076, 589361, 1178722, 2357444, 2760691, 5521382, 11042764, 52453129, 104906258, 209812516]

約数ペア:

[(1, 209812516), (2, 104906258), (4, 52453129), (19, 11042764), (38, 5521382), (76, 2760691), (89, 2357444), (178, 1178722), (356, 589361), (1691, 124076), (3382, 62038), (6764, 31019)]