20878758

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1489}}^1$

素因数の和:1557

約数の個数: 48

約数和(自身を含む): 48812400

約数和(自身を除く): 27933642

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 41, 57, 82, 114, 123, 171, 246, 342, 369, 738, 779, 1489, 1558, 2337, 2978, 4467, 4674, 7011, 8934, 13401, 14022, 26802, 28291, 56582, 61049, 84873, 122098, 169746, 183147, 254619, 366294, 509238, 549441, 1098882, 1159931, 2319862, 3479793, 6959586, 10439379, 20878758]

約数ペア:

[(1, 20878758), (2, 10439379), (3, 6959586), (6, 3479793), (9, 2319862), (18, 1159931), (19, 1098882), (38, 549441), (41, 509238), (57, 366294), (82, 254619), (114, 183147), (123, 169746), (171, 122098), (246, 84873), (342, 61049), (369, 56582), (738, 28291), (779, 26802), (1489, 14022), (1558, 13401), (2337, 8934), (2978, 7011), (4467, 4674)]