20571001997

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1637}}^1\times {\mathrm{8123}}^1$

素因数の和:9797

約数の個数: 32

約数和(自身を含む): 26827137792

約数和(自身を除く): 6256135795

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 1637, 8123, 11459, 21281, 27829, 56861, 105599, 138091, 148967, 194803, 361777, 739193, 966637, 1795183, 2532439, 12566281, 13297351, 93081457, 172865563, 226054967, 1210058941, 1582384769, 2938714571, 20571001997]

約数ペア:

[(1, 20571001997), (7, 2938714571), (13, 1582384769), (17, 1210058941), (91, 226054967), (119, 172865563), (221, 93081457), (1547, 13297351), (1637, 12566281), (8123, 2532439), (11459, 1795183), (21281, 966637), (27829, 739193), (56861, 361777), (105599, 194803), (138091, 148967)]