20076280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10243}}^1$

素因数の和:10268

約数の個数: 48

約数和(自身を含む): 52551720

約数和(自身を除く): 32475440

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, 10243, 20486, 40972, 51215, 71701, 81944, 102430, 143402, 204860, 286804, 358505, 409720, 501907, 573608, 717010, 1003814, 1434020, 2007628, 2509535, 2868040, 4015256, 5019070, 10038140, 20076280]

約数ペア:

[(1, 20076280), (2, 10038140), (4, 5019070), (5, 4015256), (7, 2868040), (8, 2509535), (10, 2007628), (14, 1434020), (20, 1003814), (28, 717010), (35, 573608), (40, 501907), (49, 409720), (56, 358505), (70, 286804), (98, 204860), (140, 143402), (196, 102430), (245, 81944), (280, 71701), (392, 51215), (490, 40972), (980, 20486), (1960, 10243)]