19655360

素因数分解:

$2^6\times 5^1\times {\mathrm{239}}^1\times {\mathrm{257}}^1$

素因数の和:513

約数の個数: 56

約数和(自身を含む): 47183040

約数和(自身を除く): 27527680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 239, 257, 320, 478, 514, 956, 1028, 1195, 1285, 1912, 2056, 2390, 2570, 3824, 4112, 4780, 5140, 7648, 8224, 9560, 10280, 15296, 16448, 19120, 20560, 38240, 41120, 61423, 76480, 82240, 122846, 245692, 307115, 491384, 614230, 982768, 1228460, 1965536, 2456920, 3931072, 4913840, 9827680, 19655360]

約数ペア:

[(1, 19655360), (2, 9827680), (4, 4913840), (5, 3931072), (8, 2456920), (10, 1965536), (16, 1228460), (20, 982768), (32, 614230), (40, 491384), (64, 307115), (80, 245692), (160, 122846), (239, 82240), (257, 76480), (320, 61423), (478, 41120), (514, 38240), (956, 20560), (1028, 19120), (1195, 16448), (1285, 15296), (1912, 10280), (2056, 9560), (2390, 8224), (2570, 7648), (3824, 5140), (4112, 4780)]