21243494

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:272

約数の個数: 32

約数和(自身を含む): 34497792

約数和(自身を除く): 13254298

約数列:

[1, 2, 31, 41, 61, 62, 82, 122, 137, 274, 1271, 1891, 2501, 2542, 3782, 4247, 5002, 5617, 8357, 8494, 11234, 16714, 77531, 155062, 174127, 259067, 342637, 348254, 518134, 685274, 10621747, 21243494]

約数ペア:

[(1, 21243494), (2, 10621747), (31, 685274), (41, 518134), (61, 348254), (62, 342637), (82, 259067), (122, 174127), (137, 155062), (274, 77531), (1271, 16714), (1891, 11234), (2501, 8494), (2542, 8357), (3782, 5617), (4247, 5002)]