12701440

素因数分解:

$2^8\times 5^1\times {\mathrm{9923}}^1$

素因数の和:9944

約数の個数: 36

約数和(自身を含む): 30426984

約数和(自身を除く): 17725544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 9923, 19846, 39692, 49615, 79384, 99230, 158768, 198460, 317536, 396920, 635072, 793840, 1270144, 1587680, 2540288, 3175360, 6350720, 12701440]

約数ペア:

[(1, 12701440), (2, 6350720), (4, 3175360), (5, 2540288), (8, 1587680), (10, 1270144), (16, 793840), (20, 635072), (32, 396920), (40, 317536), (64, 198460), (80, 158768), (128, 99230), (160, 79384), (256, 49615), (320, 39692), (640, 19846), (1280, 9923)]