18995907

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{587}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 30707712

約数和(自身を除く): 11711805

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 587, 1407, 1541, 1761, 4109, 4623, 10787, 12327, 13501, 32361, 39329, 40503, 94507, 117987, 275303, 283521, 825909, 904567, 2713701, 6331969, 18995907]

約数ペア:

[(1, 18995907), (3, 6331969), (7, 2713701), (21, 904567), (23, 825909), (67, 283521), (69, 275303), (161, 117987), (201, 94507), (469, 40503), (483, 39329), (587, 32361), (1407, 13501), (1541, 12327), (1761, 10787), (4109, 4623)]