126812920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{243871}}^1$

素因数の和:243895

約数の個数: 32

約数和(自身を含む): 307278720

約数和(自身を除く): 180465800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 243871, 487742, 975484, 1219355, 1950968, 2438710, 3170323, 4877420, 6340646, 9754840, 12681292, 15851615, 25362584, 31703230, 63406460, 126812920]

約数ペア:

[(1, 126812920), (2, 63406460), (4, 31703230), (5, 25362584), (8, 15851615), (10, 12681292), (13, 9754840), (20, 6340646), (26, 4877420), (40, 3170323), (52, 2438710), (65, 1950968), (104, 1219355), (130, 975484), (260, 487742), (520, 243871)]