21539696

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 43104384

約数和(自身を除く): 21564688

約数列:

[1, 2, 4, 8, 16, 67, 71, 134, 142, 268, 283, 284, 536, 566, 568, 1072, 1132, 1136, 2264, 4528, 4757, 9514, 18961, 19028, 20093, 37922, 38056, 40186, 75844, 76112, 80372, 151688, 160744, 303376, 321488, 1346231, 2692462, 5384924, 10769848, 21539696]

約数ペア:

[(1, 21539696), (2, 10769848), (4, 5384924), (8, 2692462), (16, 1346231), (67, 321488), (71, 303376), (134, 160744), (142, 151688), (268, 80372), (283, 76112), (284, 75844), (536, 40186), (566, 38056), (568, 37922), (1072, 20093), (1132, 19028), (1136, 18961), (2264, 9514), (4528, 4757)]