19691920

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1879}}^1$

素因数の和:2023

約数の個数: 40

約数和(自身を含む): 46157760

約数和(自身を除く): 26465840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 1879, 2096, 2620, 3758, 5240, 7516, 9395, 10480, 15032, 18790, 30064, 37580, 75160, 150320, 246149, 492298, 984596, 1230745, 1969192, 2461490, 3938384, 4922980, 9845960, 19691920]

約数ペア:

[(1, 19691920), (2, 9845960), (4, 4922980), (5, 3938384), (8, 2461490), (10, 1969192), (16, 1230745), (20, 984596), (40, 492298), (80, 246149), (131, 150320), (262, 75160), (524, 37580), (655, 30064), (1048, 18790), (1310, 15032), (1879, 10480), (2096, 9395), (2620, 7516), (3758, 5240)]