144020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 319200

約数和(自身を除く): 175180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 379, 380, 758, 1516, 1895, 3790, 7201, 7580, 14402, 28804, 36005, 72010, 144020]

約数ペア:

[(1, 144020), (2, 72010), (4, 36005), (5, 28804), (10, 14402), (19, 7580), (20, 7201), (38, 3790), (76, 1895), (95, 1516), (190, 758), (379, 380)]