221440

素因数分解:

$2^8\times 5^1\times {\mathrm{173}}^1$

素因数の和:194

約数の個数: 36

約数和(自身を含む): 533484

約数和(自身を除く): 312044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 173, 256, 320, 346, 640, 692, 865, 1280, 1384, 1730, 2768, 3460, 5536, 6920, 11072, 13840, 22144, 27680, 44288, 55360, 110720, 221440]

約数ペア:

[(1, 221440), (2, 110720), (4, 55360), (5, 44288), (8, 27680), (10, 22144), (16, 13840), (20, 11072), (32, 6920), (40, 5536), (64, 3460), (80, 2768), (128, 1730), (160, 1384), (173, 1280), (256, 865), (320, 692), (346, 640)]