20655828

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1307}}^1$

素因数の和:1756

約数の個数: 36

約数和(自身を含む): 52372320

約数和(自身を除く): 31716492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1307, 1317, 1756, 2614, 2634, 3921, 3951, 5228, 5268, 7842, 7902, 11763, 15684, 15804, 23526, 47052, 573773, 1147546, 1721319, 2295092, 3442638, 5163957, 6885276, 10327914, 20655828]

約数ペア:

[(1, 20655828), (2, 10327914), (3, 6885276), (4, 5163957), (6, 3442638), (9, 2295092), (12, 1721319), (18, 1147546), (36, 573773), (439, 47052), (878, 23526), (1307, 15804), (1317, 15684), (1756, 11763), (2614, 7902), (2634, 7842), (3921, 5268), (3951, 5228)]