21986553

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{283}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 32716800

約数和(自身を除く): 10730247

約数列:

[1, 3, 19, 29, 47, 57, 87, 141, 283, 551, 849, 893, 1363, 1653, 2679, 4089, 5377, 8207, 13301, 16131, 24621, 25897, 39903, 77691, 155933, 252719, 385729, 467799, 758157, 1157187, 7328851, 21986553]

約数ペア:

[(1, 21986553), (3, 7328851), (19, 1157187), (29, 758157), (47, 467799), (57, 385729), (87, 252719), (141, 155933), (283, 77691), (551, 39903), (849, 25897), (893, 24621), (1363, 16131), (1653, 13301), (2679, 8207), (4089, 5377)]