28071745

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 36892800

約数和(自身を除く): 8821055

約数列:

[1, 5, 13, 65, 139, 169, 239, 695, 845, 1195, 1807, 3107, 9035, 15535, 23491, 33221, 40391, 117455, 166105, 201955, 431873, 2159365, 5614349, 28071745]

約数ペア:

[(1, 28071745), (5, 5614349), (13, 2159365), (65, 431873), (139, 201955), (169, 166105), (239, 117455), (695, 40391), (845, 33221), (1195, 23491), (1807, 15535), (3107, 9035)]