21279968

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1059

約数の個数: 48

約数和(自身を含む): 45269280

約数和(自身を除く): 23989312

約数列:

[1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 92, 116, 184, 232, 368, 464, 667, 736, 928, 997, 1334, 1994, 2668, 3988, 5336, 7976, 10672, 15952, 21344, 22931, 28913, 31904, 45862, 57826, 91724, 115652, 183448, 231304, 366896, 462608, 664999, 733792, 925216, 1329998, 2659996, 5319992, 10639984, 21279968]

約数ペア:

[(1, 21279968), (2, 10639984), (4, 5319992), (8, 2659996), (16, 1329998), (23, 925216), (29, 733792), (32, 664999), (46, 462608), (58, 366896), (92, 231304), (116, 183448), (184, 115652), (232, 91724), (368, 57826), (464, 45862), (667, 31904), (736, 28913), (928, 22931), (997, 21344), (1334, 15952), (1994, 10672), (2668, 7976), (3988, 5336)]