638864523

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{69389}}^1$

素因数の和:69440

約数の個数: 32

約数和(自身を含む): 1065830400

約数和(自身を除く): 426965877

約数列:

[1, 3, 9, 11, 27, 31, 33, 93, 99, 279, 297, 341, 837, 1023, 3069, 9207, 69389, 208167, 624501, 763279, 1873503, 2151059, 2289837, 6453177, 6869511, 19359531, 20608533, 23661649, 58078593, 70984947, 212954841, 638864523]

約数ペア:

[(1, 638864523), (3, 212954841), (9, 70984947), (11, 58078593), (27, 23661649), (31, 20608533), (33, 19359531), (93, 6869511), (99, 6453177), (279, 2289837), (297, 2151059), (341, 1873503), (837, 763279), (1023, 624501), (3069, 208167), (9207, 69389)]