21036448

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 22073696

約数列:

[1, 2, 4, 8, 16, 32, 47, 71, 94, 142, 188, 197, 284, 376, 394, 568, 752, 788, 1136, 1504, 1576, 2272, 3152, 3337, 6304, 6674, 9259, 13348, 13987, 18518, 26696, 27974, 37036, 53392, 55948, 74072, 106784, 111896, 148144, 223792, 296288, 447584, 657389, 1314778, 2629556, 5259112, 10518224, 21036448]

約数ペア:

[(1, 21036448), (2, 10518224), (4, 5259112), (8, 2629556), (16, 1314778), (32, 657389), (47, 447584), (71, 296288), (94, 223792), (142, 148144), (188, 111896), (197, 106784), (284, 74072), (376, 55948), (394, 53392), (568, 37036), (752, 27974), (788, 26696), (1136, 18518), (1504, 13987), (1576, 13348), (2272, 9259), (3152, 6674), (3337, 6304)]