19979475

素因数分解:

$3^1\times 5^2\times {\mathrm{271}}^1\times {\mathrm{983}}^1$

素因数の和:1267

約数の個数: 24

約数和(自身を含む): 33188352

約数和(自身を除く): 13208877

約数列:

[1, 3, 5, 15, 25, 75, 271, 813, 983, 1355, 2949, 4065, 4915, 6775, 14745, 20325, 24575, 73725, 266393, 799179, 1331965, 3995895, 6659825, 19979475]

約数ペア:

[(1, 19979475), (3, 6659825), (5, 3995895), (15, 1331965), (25, 799179), (75, 266393), (271, 73725), (813, 24575), (983, 20325), (1355, 14745), (2949, 6775), (4065, 4915)]