2172880

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:343

約数の個数: 40

約数和(自身を含む): 5113512

約数和(自身を除く): 2940632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 173, 314, 346, 628, 692, 785, 865, 1256, 1384, 1570, 1730, 2512, 2768, 3140, 3460, 6280, 6920, 12560, 13840, 27161, 54322, 108644, 135805, 217288, 271610, 434576, 543220, 1086440, 2172880]

約数ペア:

[(1, 2172880), (2, 1086440), (4, 543220), (5, 434576), (8, 271610), (10, 217288), (16, 135805), (20, 108644), (40, 54322), (80, 27161), (157, 13840), (173, 12560), (314, 6920), (346, 6280), (628, 3460), (692, 3140), (785, 2768), (865, 2512), (1256, 1730), (1384, 1570)]