21111909

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4549}}^1$

素因数の和:4589

約数の個数: 32

約数和(自身を含む): 36691200

約数和(自身を除く): 15579291

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4549, 4641, 13647, 31843, 59137, 77333, 95529, 177411, 231999, 413959, 541331, 1005329, 1241877, 1623993, 3015987, 7037303, 21111909]

約数ペア:

[(1, 21111909), (3, 7037303), (7, 3015987), (13, 1623993), (17, 1241877), (21, 1005329), (39, 541331), (51, 413959), (91, 231999), (119, 177411), (221, 95529), (273, 77333), (357, 59137), (663, 31843), (1547, 13647), (4549, 4641)]