7998991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 10999296

約数和(自身を除く): 3000305

約数列:

[1, 7, 11, 13, 61, 77, 91, 131, 143, 427, 671, 793, 917, 1001, 1441, 1703, 4697, 5551, 7991, 8723, 10087, 11921, 18733, 55937, 61061, 87901, 103883, 131131, 615307, 727181, 1142713, 7998991]

約数ペア:

[(1, 7998991), (7, 1142713), (11, 727181), (13, 615307), (61, 131131), (77, 103883), (91, 87901), (131, 61061), (143, 55937), (427, 18733), (671, 11921), (793, 10087), (917, 8723), (1001, 7991), (1441, 5551), (1703, 4697)]