19787068780

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{821}}^1\times {\mathrm{7393}}^1$

素因数の和:8386

約数の個数: 48

約数和(自身を含む): 41864354784

約数和(自身を除く): 22077286004

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 821, 1630, 1642, 3260, 3284, 4105, 7393, 8210, 14786, 16420, 29572, 36965, 73930, 133823, 147860, 267646, 535292, 669115, 1205059, 1338230, 2410118, 2676460, 4820236, 6025295, 6069653, 12050590, 12139306, 24101180, 24278612, 30348265, 60696530, 121393060, 989353439, 1978706878, 3957413756, 4946767195, 9893534390, 19787068780]

約数ペア:

[(1, 19787068780), (2, 9893534390), (4, 4946767195), (5, 3957413756), (10, 1978706878), (20, 989353439), (163, 121393060), (326, 60696530), (652, 30348265), (815, 24278612), (821, 24101180), (1630, 12139306), (1642, 12050590), (3260, 6069653), (3284, 6025295), (4105, 4820236), (7393, 2676460), (8210, 2410118), (14786, 1338230), (16420, 1205059), (29572, 669115), (36965, 535292), (73930, 267646), (133823, 147860)]