20321667247

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{155387}}^1$

素因数の和:155575

約数の個数: 24

約数和(自身を含む): 25189637904

約数和(自身を除く): 4867970657

約数列:

[1, 7, 17, 49, 119, 157, 833, 1099, 2669, 7693, 18683, 130781, 155387, 1087709, 2641579, 7613963, 18491053, 24395759, 129437371, 170770313, 414727903, 1195392191, 2903095321, 20321667247]

約数ペア:

[(1, 20321667247), (7, 2903095321), (17, 1195392191), (49, 414727903), (119, 170770313), (157, 129437371), (833, 24395759), (1099, 18491053), (2669, 7613963), (7693, 2641579), (18683, 1087709), (130781, 155387)]