21027130

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{691}}^1$

素因数の和:894

約数の個数: 32

約数和(自身を含む): 40357440

約数和(自身を除く): 19330310

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 179, 358, 691, 895, 1382, 1790, 3043, 3455, 6086, 6910, 11747, 15215, 23494, 30430, 58735, 117470, 123689, 247378, 618445, 1236890, 2102713, 4205426, 10513565, 21027130]

約数ペア:

[(1, 21027130), (2, 10513565), (5, 4205426), (10, 2102713), (17, 1236890), (34, 618445), (85, 247378), (170, 123689), (179, 117470), (358, 58735), (691, 30430), (895, 23494), (1382, 15215), (1790, 11747), (3043, 6910), (3455, 6086)]