1221945478

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1\times {\mathrm{71317}}^1$

素因数の和:71991

約数の個数: 16

約数和(自身を含む): 1976934960

約数和(自身を除く): 754989482

約数列:

[1, 2, 13, 26, 659, 1318, 8567, 17134, 71317, 142634, 927121, 1854242, 46997903, 93995806, 610972739, 1221945478]

約数ペア:

[(1, 1221945478), (2, 610972739), (13, 93995806), (26, 46997903), (659, 1854242), (1318, 927121), (8567, 142634), (17134, 71317)]