81155556

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{31751}}^1$

素因数の和:31832

約数の個数: 36

約数和(自身を含む): 208039104

約数和(自身を除く): 126883548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 31751, 63502, 95253, 127004, 190506, 285759, 381012, 571518, 1143036, 2254321, 4508642, 6762963, 9017284, 13525926, 20288889, 27051852, 40577778, 81155556]

約数ペア:

[(1, 81155556), (2, 40577778), (3, 27051852), (4, 20288889), (6, 13525926), (9, 9017284), (12, 6762963), (18, 4508642), (36, 2254321), (71, 1143036), (142, 571518), (213, 381012), (284, 285759), (426, 190506), (639, 127004), (852, 95253), (1278, 63502), (2556, 31751)]