81288515

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1061}}^1$

素因数の和:1283

約数の個数: 32

約数和(自身を含む): 122342400

約数和(自身を除く): 41053885

約数列:

[1, 5, 7, 11, 35, 55, 77, 199, 385, 995, 1061, 1393, 2189, 5305, 6965, 7427, 10945, 11671, 15323, 37135, 58355, 76615, 81697, 211139, 408485, 1055695, 1477973, 2322529, 7389865, 11612645, 16257703, 81288515]

約数ペア:

[(1, 81288515), (5, 16257703), (7, 11612645), (11, 7389865), (35, 2322529), (55, 1477973), (77, 1055695), (199, 408485), (385, 211139), (995, 81697), (1061, 76615), (1393, 58355), (2189, 37135), (5305, 15323), (6965, 11671), (7427, 10945)]