19903936

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:581

約数の個数: 56

約数和(自身を含む): 43525440

約数和(自身を除く): 23621504

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 188, 208, 376, 416, 509, 611, 752, 832, 1018, 1222, 1504, 2036, 2444, 3008, 4072, 4888, 6617, 8144, 9776, 13234, 16288, 19552, 23923, 26468, 32576, 39104, 47846, 52936, 95692, 105872, 191384, 211744, 310999, 382768, 423488, 621998, 765536, 1243996, 1531072, 2487992, 4975984, 9951968, 19903936]

約数ペア:

[(1, 19903936), (2, 9951968), (4, 4975984), (8, 2487992), (13, 1531072), (16, 1243996), (26, 765536), (32, 621998), (47, 423488), (52, 382768), (64, 310999), (94, 211744), (104, 191384), (188, 105872), (208, 95692), (376, 52936), (416, 47846), (509, 39104), (611, 32576), (752, 26468), (832, 23923), (1018, 19552), (1222, 16288), (1504, 13234), (2036, 9776), (2444, 8144), (3008, 6617), (4072, 4888)]