19875805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 27509760

約数和(自身を除く): 7633955

約数列:

[1, 5, 17, 19, 31, 85, 95, 155, 323, 397, 527, 589, 1615, 1985, 2635, 2945, 6749, 7543, 10013, 12307, 33745, 37715, 50065, 61535, 128231, 209219, 233833, 641155, 1046095, 1169165, 3975161, 19875805]

約数ペア:

[(1, 19875805), (5, 3975161), (17, 1169165), (19, 1046095), (31, 641155), (85, 233833), (95, 209219), (155, 128231), (323, 61535), (397, 50065), (527, 37715), (589, 33745), (1615, 12307), (1985, 10013), (2635, 7543), (2945, 6749)]