20879824

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4547}}^1$

素因数の和:4603

約数の個数: 40

約数和(自身を含む): 47371968

約数和(自身を除く): 26492144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4547, 4592, 9094, 18188, 31829, 36376, 63658, 72752, 127316, 186427, 254632, 372854, 509264, 745708, 1304989, 1491416, 2609978, 2982832, 5219956, 10439912, 20879824]

約数ペア:

[(1, 20879824), (2, 10439912), (4, 5219956), (7, 2982832), (8, 2609978), (14, 1491416), (16, 1304989), (28, 745708), (41, 509264), (56, 372854), (82, 254632), (112, 186427), (164, 127316), (287, 72752), (328, 63658), (574, 36376), (656, 31829), (1148, 18188), (2296, 9094), (4547, 4592)]