212980975

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{23599}}^1$

素因数の和:23647

約数の個数: 18

約数和(自身を含む): 278739600

約数和(自身を除く): 65758625

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 9025, 23599, 117995, 448381, 589975, 2241905, 8519239, 11209525, 42596195, 212980975]

約数ペア:

[(1, 212980975), (5, 42596195), (19, 11209525), (25, 8519239), (95, 2241905), (361, 589975), (475, 448381), (1805, 117995), (9025, 23599)]