21016280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27653}}^1$

素因数の和:27683

約数の個数: 32

約数和(自身を含む): 49777200

約数和(自身を除く): 28760920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27653, 55306, 110612, 138265, 221224, 276530, 525407, 553060, 1050814, 1106120, 2101628, 2627035, 4203256, 5254070, 10508140, 21016280]

約数ペア:

[(1, 21016280), (2, 10508140), (4, 5254070), (5, 4203256), (8, 2627035), (10, 2101628), (19, 1106120), (20, 1050814), (38, 553060), (40, 525407), (76, 276530), (95, 221224), (152, 138265), (190, 110612), (380, 55306), (760, 27653)]