78820721

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 102021120

約数和(自身を除く): 23200399

約数列:

[1, 7, 17, 19, 71, 119, 133, 323, 491, 497, 1207, 1349, 2261, 3437, 8347, 8449, 9329, 9443, 22933, 34861, 58429, 65303, 158593, 160531, 244027, 592637, 662359, 1110151, 4148459, 4636513, 11260103, 78820721]

約数ペア:

[(1, 78820721), (7, 11260103), (17, 4636513), (19, 4148459), (71, 1110151), (119, 662359), (133, 592637), (323, 244027), (491, 160531), (497, 158593), (1207, 65303), (1349, 58429), (2261, 34861), (3437, 22933), (8347, 9443), (8449, 9329)]