20565578901

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{77239}}^1$

素因数の和:77689

約数の個数: 32

約数和(自身を含む): 32428441600

約数和(自身を除く): 11862862699

約数列:

[1, 3, 7, 21, 31, 93, 217, 409, 651, 1227, 2863, 8589, 12679, 38037, 77239, 88753, 231717, 266259, 540673, 1622019, 2394409, 7183227, 16760863, 31590751, 50282589, 94772253, 221135257, 663405771, 979313281, 2937939843, 6855192967, 20565578901]

約数ペア:

[(1, 20565578901), (3, 6855192967), (7, 2937939843), (21, 979313281), (31, 663405771), (93, 221135257), (217, 94772253), (409, 50282589), (651, 31590751), (1227, 16760863), (2863, 7183227), (8589, 2394409), (12679, 1622019), (38037, 540673), (77239, 266259), (88753, 231717)]