208656560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1559}}^1$

素因数の和:1818

約数の個数: 80

約数和(自身を含む): 557107200

約数和(自身を除く): 348450640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 239, 280, 478, 560, 956, 1195, 1559, 1673, 1912, 2390, 3118, 3346, 3824, 4780, 6236, 6692, 7795, 8365, 9560, 10913, 12472, 13384, 15590, 16730, 19120, 21826, 24944, 26768, 31180, 33460, 43652, 54565, 62360, 66920, 87304, 109130, 124720, 133840, 174608, 218260, 372601, 436520, 745202, 873040, 1490404, 1863005, 2608207, 2980808, 3726010, 5216414, 5961616, 7452020, 10432828, 13041035, 14904040, 20865656, 26082070, 29808080, 41731312, 52164140, 104328280, 208656560]

約数ペア:

[(1, 208656560), (2, 104328280), (4, 52164140), (5, 41731312), (7, 29808080), (8, 26082070), (10, 20865656), (14, 14904040), (16, 13041035), (20, 10432828), (28, 7452020), (35, 5961616), (40, 5216414), (56, 3726010), (70, 2980808), (80, 2608207), (112, 1863005), (140, 1490404), (239, 873040), (280, 745202), (478, 436520), (560, 372601), (956, 218260), (1195, 174608), (1559, 133840), (1673, 124720), (1912, 109130), (2390, 87304), (3118, 66920), (3346, 62360), (3824, 54565), (4780, 43652), (6236, 33460), (6692, 31180), (7795, 26768), (8365, 24944), (9560, 21826), (10913, 19120), (12472, 16730), (13384, 15590)]