21055008

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16871}}^1$

素因数の和:16897

約数の個数: 48

約数和(自身を含む): 59524416

約数和(自身を除く): 38469408

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16871, 33742, 50613, 67484, 101226, 134968, 202452, 219323, 269936, 404904, 438646, 539872, 657969, 809808, 877292, 1315938, 1619616, 1754584, 2631876, 3509168, 5263752, 7018336, 10527504, 21055008]

約数ペア:

[(1, 21055008), (2, 10527504), (3, 7018336), (4, 5263752), (6, 3509168), (8, 2631876), (12, 1754584), (13, 1619616), (16, 1315938), (24, 877292), (26, 809808), (32, 657969), (39, 539872), (48, 438646), (52, 404904), (78, 269936), (96, 219323), (104, 202452), (156, 134968), (208, 101226), (312, 67484), (416, 50613), (624, 33742), (1248, 16871)]