31083640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15859}}^1$

素因数の和:15884

約数の個数: 48

約数和(自身を含む): 81361800

約数和(自身を除く): 50278160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 15859, 31718, 63436, 79295, 111013, 126872, 158590, 222026, 317180, 444052, 555065, 634360, 777091, 888104, 1110130, 1554182, 2220260, 3108364, 3885455, 4440520, 6216728, 7770910, 15541820, 31083640]

約数ペア:

[(1, 31083640), (2, 15541820), (4, 7770910), (5, 6216728), (7, 4440520), (8, 3885455), (10, 3108364), (14, 2220260), (20, 1554182), (28, 1110130), (35, 888104), (40, 777091), (49, 634360), (56, 555065), (70, 444052), (98, 317180), (140, 222026), (196, 158590), (245, 126872), (280, 111013), (392, 79295), (490, 63436), (980, 31718), (1960, 15859)]