19992978

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1103}}^1$

素因数の和:1183

約数の個数: 48

約数和(自身を含む): 46500480

約数和(自身を除く): 26507502

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 53, 57, 106, 114, 159, 171, 318, 342, 477, 954, 1007, 1103, 2014, 2206, 3021, 3309, 6042, 6618, 9063, 9927, 18126, 19854, 20957, 41914, 58459, 62871, 116918, 125742, 175377, 188613, 350754, 377226, 526131, 1052262, 1110721, 2221442, 3332163, 6664326, 9996489, 19992978]

約数ペア:

[(1, 19992978), (2, 9996489), (3, 6664326), (6, 3332163), (9, 2221442), (18, 1110721), (19, 1052262), (38, 526131), (53, 377226), (57, 350754), (106, 188613), (114, 175377), (159, 125742), (171, 116918), (318, 62871), (342, 58459), (477, 41914), (954, 20957), (1007, 19854), (1103, 18126), (2014, 9927), (2206, 9063), (3021, 6618), (3309, 6042)]