28420525

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{307}}^1$

素因数の和:370

約数の個数: 36

約数和(自身を含む): 42240352

約数和(自身を除く): 13819827

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 307, 529, 575, 805, 1535, 2149, 2645, 3703, 4025, 7061, 7675, 10745, 13225, 18515, 35305, 49427, 53725, 92575, 162403, 176525, 247135, 812015, 1136821, 1235675, 4060075, 5684105, 28420525]

約数ペア:

[(1, 28420525), (5, 5684105), (7, 4060075), (23, 1235675), (25, 1136821), (35, 812015), (115, 247135), (161, 176525), (175, 162403), (307, 92575), (529, 53725), (575, 49427), (805, 35305), (1535, 18515), (2149, 13225), (2645, 10745), (3703, 7675), (4025, 7061)]