130520020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 280002240

約数和(自身を除く): 149482220

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 257, 268, 335, 379, 514, 670, 758, 1028, 1285, 1340, 1516, 1895, 2570, 3790, 5140, 7580, 17219, 25393, 34438, 50786, 68876, 86095, 97403, 101572, 126965, 172190, 194806, 253930, 344380, 389612, 487015, 507860, 974030, 1948060, 6526001, 13052002, 26104004, 32630005, 65260010, 130520020]

約数ペア:

[(1, 130520020), (2, 65260010), (4, 32630005), (5, 26104004), (10, 13052002), (20, 6526001), (67, 1948060), (134, 974030), (257, 507860), (268, 487015), (335, 389612), (379, 344380), (514, 253930), (670, 194806), (758, 172190), (1028, 126965), (1285, 101572), (1340, 97403), (1516, 86095), (1895, 68876), (2570, 50786), (3790, 34438), (5140, 25393), (7580, 17219)]