20500240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13487}}^1$

素因数の和:13519

約数の個数: 40

約数和(自身を含む): 50175360

約数和(自身を除く): 29675120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13487, 26974, 53948, 67435, 107896, 134870, 215792, 256253, 269740, 512506, 539480, 1025012, 1078960, 1281265, 2050024, 2562530, 4100048, 5125060, 10250120, 20500240]

約数ペア:

[(1, 20500240), (2, 10250120), (4, 5125060), (5, 4100048), (8, 2562530), (10, 2050024), (16, 1281265), (19, 1078960), (20, 1025012), (38, 539480), (40, 512506), (76, 269740), (80, 256253), (95, 215792), (152, 134870), (190, 107896), (304, 67435), (380, 53948), (760, 26974), (1520, 13487)]