21341440

素因数分解:

$2^8\times 5^1\times {\mathrm{16673}}^1$

素因数の和:16694

約数の個数: 36

約数和(自身を含む): 51122484

約数和(自身を除く): 29781044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16673, 33346, 66692, 83365, 133384, 166730, 266768, 333460, 533536, 666920, 1067072, 1333840, 2134144, 2667680, 4268288, 5335360, 10670720, 21341440]

約数ペア:

[(1, 21341440), (2, 10670720), (4, 5335360), (5, 4268288), (8, 2667680), (10, 2134144), (16, 1333840), (20, 1067072), (32, 666920), (40, 533536), (64, 333460), (80, 266768), (128, 166730), (160, 133384), (256, 83365), (320, 66692), (640, 33346), (1280, 16673)]