9997520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9613}}^1$

素因数の和:9639

約数の個数: 40

約数和(自身を含む): 25034856

約数和(自身を除く): 15037336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 9613, 19226, 38452, 48065, 76904, 96130, 124969, 153808, 192260, 249938, 384520, 499876, 624845, 769040, 999752, 1249690, 1999504, 2499380, 4998760, 9997520]

約数ペア:

[(1, 9997520), (2, 4998760), (4, 2499380), (5, 1999504), (8, 1249690), (10, 999752), (13, 769040), (16, 624845), (20, 499876), (26, 384520), (40, 249938), (52, 192260), (65, 153808), (80, 124969), (104, 96130), (130, 76904), (208, 48065), (260, 38452), (520, 19226), (1040, 9613)]