20469505

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 30697920

約数和(自身を除く): 10228415

約数列:

[1, 5, 7, 29, 35, 43, 49, 67, 145, 203, 215, 245, 301, 335, 469, 1015, 1247, 1421, 1505, 1943, 2107, 2345, 2881, 3283, 6235, 7105, 8729, 9715, 10535, 13601, 14405, 16415, 20167, 43645, 61103, 68005, 83549, 95207, 100835, 141169, 305515, 417745, 476035, 584843, 705845, 2924215, 4093901, 20469505]

約数ペア:

[(1, 20469505), (5, 4093901), (7, 2924215), (29, 705845), (35, 584843), (43, 476035), (49, 417745), (67, 305515), (145, 141169), (203, 100835), (215, 95207), (245, 83549), (301, 68005), (335, 61103), (469, 43645), (1015, 20167), (1247, 16415), (1421, 14405), (1505, 13601), (1943, 10535), (2107, 9715), (2345, 8729), (2881, 7105), (3283, 6235)]