1215940090

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{312581}}^1$

素因数の和:312977

約数の個数: 16

約数和(自身を含む): 2194325640

約数和(自身を除く): 978385550

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 312581, 625162, 1562905, 3125810, 121594009, 243188018, 607970045, 1215940090]

約数ペア:

[(1, 1215940090), (2, 607970045), (5, 243188018), (10, 121594009), (389, 3125810), (778, 1562905), (1945, 625162), (3890, 312581)]