19887425

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 25519200

約数和(自身を除く): 5631775

約数列:

[1, 5, 25, 59, 97, 139, 295, 485, 695, 1475, 2425, 3475, 5723, 8201, 13483, 28615, 41005, 67415, 143075, 205025, 337075, 795497, 3977485, 19887425]

約数ペア:

[(1, 19887425), (5, 3977485), (25, 795497), (59, 337075), (97, 205025), (139, 143075), (295, 67415), (485, 41005), (695, 28615), (1475, 13483), (2425, 8201), (3475, 5723)]