39958480

素因数分解:

$2^4\times 5^1\times {\mathrm{499481}}^1$

素因数の和:499494

約数の個数: 20

約数和(自身を含む): 92903652

約数和(自身を除く): 52945172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499481, 998962, 1997924, 2497405, 3995848, 4994810, 7991696, 9989620, 19979240, 39958480]

約数ペア:

[(1, 39958480), (2, 19979240), (4, 9989620), (5, 7991696), (8, 4994810), (10, 3995848), (16, 2497405), (20, 1997924), (40, 998962), (80, 499481)]