21016193336

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{1231}}^1\times {\mathrm{20719}}^1$

素因数の和:22059

約数の個数: 32

約数和(自身を含む): 39822182400

約数和(自身を除く): 18805989064

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 1231, 2462, 4924, 9848, 20719, 41438, 82876, 126793, 165752, 253586, 507172, 1014344, 2134057, 4268114, 8536228, 17072456, 25505089, 51010178, 102020356, 204040712, 2627024167, 5254048334, 10508096668, 21016193336]

約数ペア:

[(1, 21016193336), (2, 10508096668), (4, 5254048334), (8, 2627024167), (103, 204040712), (206, 102020356), (412, 51010178), (824, 25505089), (1231, 17072456), (2462, 8536228), (4924, 4268114), (9848, 2134057), (20719, 1014344), (41438, 507172), (82876, 253586), (126793, 165752)]