21929271

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 37384704

約数和(自身を除く): 15455433

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 167, 169, 259, 273, 481, 501, 507, 777, 1169, 1183, 1443, 2171, 3367, 3507, 3549, 6179, 6253, 6513, 10101, 15197, 18537, 18759, 28223, 43253, 43771, 45591, 80327, 84669, 129759, 131313, 197561, 240981, 562289, 592683, 1044251, 1686867, 3132753, 7309757, 21929271]

約数ペア:

[(1, 21929271), (3, 7309757), (7, 3132753), (13, 1686867), (21, 1044251), (37, 592683), (39, 562289), (91, 240981), (111, 197561), (167, 131313), (169, 129759), (259, 84669), (273, 80327), (481, 45591), (501, 43771), (507, 43253), (777, 28223), (1169, 18759), (1183, 18537), (1443, 15197), (2171, 10101), (3367, 6513), (3507, 6253), (3549, 6179)]