21209552

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2081}}^1$

素因数の和:2116

約数の個数: 60

約数和(自身を含む): 51504516

約数和(自身を除く): 30294964

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2081, 2548, 4162, 5096, 8324, 10192, 14567, 16648, 27053, 29134, 33296, 54106, 58268, 101969, 108212, 116536, 189371, 203938, 216424, 233072, 378742, 407876, 432848, 757484, 815752, 1325597, 1514968, 1631504, 2651194, 3029936, 5302388, 10604776, 21209552]

約数ペア:

[(1, 21209552), (2, 10604776), (4, 5302388), (7, 3029936), (8, 2651194), (13, 1631504), (14, 1514968), (16, 1325597), (26, 815752), (28, 757484), (49, 432848), (52, 407876), (56, 378742), (91, 233072), (98, 216424), (104, 203938), (112, 189371), (182, 116536), (196, 108212), (208, 101969), (364, 58268), (392, 54106), (637, 33296), (728, 29134), (784, 27053), (1274, 16648), (1456, 14567), (2081, 10192), (2548, 8324), (4162, 5096)]