51128021

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{347}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 62205696

約数和(自身を除く): 11077675

約数列:

[1, 7, 31, 49, 97, 217, 347, 679, 1519, 2429, 3007, 4753, 10757, 17003, 21049, 33659, 75299, 147343, 235613, 527093, 1043429, 1649291, 7304003, 51128021]

約数ペア:

[(1, 51128021), (7, 7304003), (31, 1649291), (49, 1043429), (97, 527093), (217, 235613), (347, 147343), (679, 75299), (1519, 33659), (2429, 21049), (3007, 17003), (4753, 10757)]