71891428

素因数分解:

$2^2\times 7^3\times {\mathrm{61}}^1\times {\mathrm{859}}^1$

素因数の和:945

約数の個数: 48

約数和(自身を含む): 149296000

約数和(自身を除く): 77404572

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 343, 427, 686, 854, 859, 1372, 1708, 1718, 2989, 3436, 5978, 6013, 11956, 12026, 20923, 24052, 41846, 42091, 52399, 83692, 84182, 104798, 168364, 209596, 294637, 366793, 589274, 733586, 1178548, 1467172, 2567551, 5135102, 10270204, 17972857, 35945714, 71891428]

約数ペア:

[(1, 71891428), (2, 35945714), (4, 17972857), (7, 10270204), (14, 5135102), (28, 2567551), (49, 1467172), (61, 1178548), (98, 733586), (122, 589274), (196, 366793), (244, 294637), (343, 209596), (427, 168364), (686, 104798), (854, 84182), (859, 83692), (1372, 52399), (1708, 42091), (1718, 41846), (2989, 24052), (3436, 20923), (5978, 12026), (6013, 11956)]