21069392

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1091}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 43872192

約数和(自身を除く): 22802800

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1091, 1136, 1207, 2182, 2414, 4364, 4828, 8728, 9656, 17456, 18547, 19312, 37094, 74188, 77461, 148376, 154922, 296752, 309844, 619688, 1239376, 1316837, 2633674, 5267348, 10534696, 21069392]

約数ペア:

[(1, 21069392), (2, 10534696), (4, 5267348), (8, 2633674), (16, 1316837), (17, 1239376), (34, 619688), (68, 309844), (71, 296752), (136, 154922), (142, 148376), (272, 77461), (284, 74188), (568, 37094), (1091, 19312), (1136, 18547), (1207, 17456), (2182, 9656), (2414, 8728), (4364, 4828)]