15397520

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{977}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 36017784

約数和(自身を除く): 20620264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 977, 985, 1576, 1954, 1970, 3152, 3908, 3940, 4885, 7816, 7880, 9770, 15632, 15760, 19540, 39080, 78160, 192469, 384938, 769876, 962345, 1539752, 1924690, 3079504, 3849380, 7698760, 15397520]

約数ペア:

[(1, 15397520), (2, 7698760), (4, 3849380), (5, 3079504), (8, 1924690), (10, 1539752), (16, 962345), (20, 769876), (40, 384938), (80, 192469), (197, 78160), (394, 39080), (788, 19540), (977, 15760), (985, 15632), (1576, 9770), (1954, 7880), (1970, 7816), (3152, 4885), (3908, 3940)]