21202880

素因数分解:

$2^6\times 5^1\times {\mathrm{173}}^1\times {\mathrm{383}}^1$

素因数の和:573

約数の個数: 56

約数和(自身を含む): 50913792

約数和(自身を除く): 29710912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 173, 320, 346, 383, 692, 766, 865, 1384, 1532, 1730, 1915, 2768, 3064, 3460, 3830, 5536, 6128, 6920, 7660, 11072, 12256, 13840, 15320, 24512, 27680, 30640, 55360, 61280, 66259, 122560, 132518, 265036, 331295, 530072, 662590, 1060144, 1325180, 2120288, 2650360, 4240576, 5300720, 10601440, 21202880]

約数ペア:

[(1, 21202880), (2, 10601440), (4, 5300720), (5, 4240576), (8, 2650360), (10, 2120288), (16, 1325180), (20, 1060144), (32, 662590), (40, 530072), (64, 331295), (80, 265036), (160, 132518), (173, 122560), (320, 66259), (346, 61280), (383, 55360), (692, 30640), (766, 27680), (865, 24512), (1384, 15320), (1532, 13840), (1730, 12256), (1915, 11072), (2768, 7660), (3064, 6920), (3460, 6128), (3830, 5536)]