21065274

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 47309184

約数和(自身を除く): 26243910

約数列:

[1, 2, 3, 6, 9, 18, 53, 71, 106, 142, 159, 213, 311, 318, 426, 477, 622, 639, 933, 954, 1278, 1866, 2799, 3763, 5598, 7526, 11289, 16483, 22081, 22578, 32966, 33867, 44162, 49449, 66243, 67734, 98898, 132486, 148347, 198729, 296694, 397458, 1170293, 2340586, 3510879, 7021758, 10532637, 21065274]

約数ペア:

[(1, 21065274), (2, 10532637), (3, 7021758), (6, 3510879), (9, 2340586), (18, 1170293), (53, 397458), (71, 296694), (106, 198729), (142, 148347), (159, 132486), (213, 98898), (311, 67734), (318, 66243), (426, 49449), (477, 44162), (622, 33867), (639, 32966), (933, 22578), (954, 22081), (1278, 16483), (1866, 11289), (2799, 7526), (3763, 5598)]