21112528

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{557}}^1$

素因数の和:691

約数の個数: 40

約数和(自身を含む): 43175808

約数和(自身を除く): 22063280

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 103, 184, 206, 368, 412, 557, 824, 1114, 1648, 2228, 2369, 4456, 4738, 8912, 9476, 12811, 18952, 25622, 37904, 51244, 57371, 102488, 114742, 204976, 229484, 458968, 917936, 1319533, 2639066, 5278132, 10556264, 21112528]

約数ペア:

[(1, 21112528), (2, 10556264), (4, 5278132), (8, 2639066), (16, 1319533), (23, 917936), (46, 458968), (92, 229484), (103, 204976), (184, 114742), (206, 102488), (368, 57371), (412, 51244), (557, 37904), (824, 25622), (1114, 18952), (1648, 12811), (2228, 9476), (2369, 8912), (4456, 4738)]