30811580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{19501}}^1$

素因数の和:19589

約数の個数: 24

約数和(自身を含む): 65526720

約数和(自身を除く): 34715140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 19501, 39002, 78004, 97505, 195010, 390020, 1540579, 3081158, 6162316, 7702895, 15405790, 30811580]

約数ペア:

[(1, 30811580), (2, 15405790), (4, 7702895), (5, 6162316), (10, 3081158), (20, 1540579), (79, 390020), (158, 195010), (316, 97505), (395, 78004), (790, 39002), (1580, 19501)]