20125516

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:673

約数の個数: 24

約数和(自身を含む): 36011360

約数和(自身を除く): 15885844

約数列:

[1, 2, 4, 73, 146, 157, 292, 314, 439, 628, 878, 1756, 11461, 22922, 32047, 45844, 64094, 68923, 128188, 137846, 275692, 5031379, 10062758, 20125516]

約数ペア:

[(1, 20125516), (2, 10062758), (4, 5031379), (73, 275692), (146, 137846), (157, 128188), (292, 68923), (314, 64094), (439, 45844), (628, 32047), (878, 22922), (1756, 11461)]