320438560

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154057}}^1$

素因数の和:154085

約数の個数: 48

約数和(自身を含む): 815274936

約数和(自身を除く): 494836376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 154057, 308114, 616228, 770285, 1232456, 1540570, 2002741, 2464912, 3081140, 4005482, 4929824, 6162280, 8010964, 10013705, 12324560, 16021928, 20027410, 24649120, 32043856, 40054820, 64087712, 80109640, 160219280, 320438560]

約数ペア:

[(1, 320438560), (2, 160219280), (4, 80109640), (5, 64087712), (8, 40054820), (10, 32043856), (13, 24649120), (16, 20027410), (20, 16021928), (26, 12324560), (32, 10013705), (40, 8010964), (52, 6162280), (65, 4929824), (80, 4005482), (104, 3081140), (130, 2464912), (160, 2002741), (208, 1540570), (260, 1232456), (416, 770285), (520, 616228), (1040, 308114), (2080, 154057)]