20178759536

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{53}}^1\times {\mathrm{10831}}^1$

素因数の和:10931

約数の個数: 80

約数和(自身を含む): 43155987840

約数和(自身を除く): 22977228304

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 169, 208, 212, 338, 424, 676, 689, 848, 1352, 1378, 2197, 2704, 2756, 4394, 5512, 8788, 8957, 10831, 11024, 17576, 17914, 21662, 35152, 35828, 43324, 71656, 86648, 116441, 140803, 143312, 173296, 232882, 281606, 465764, 563212, 574043, 931528, 1126424, 1148086, 1830439, 1863056, 2252848, 2296172, 3660878, 4592344, 7321756, 7462559, 9184688, 14643512, 14925118, 23795707, 29287024, 29850236, 47591414, 59700472, 95182828, 97013267, 119400944, 190365656, 194026534, 380731312, 388053068, 776106136, 1261172471, 1552212272, 2522344942, 5044689884, 10089379768, 20178759536]

約数ペア:

[(1, 20178759536), (2, 10089379768), (4, 5044689884), (8, 2522344942), (13, 1552212272), (16, 1261172471), (26, 776106136), (52, 388053068), (53, 380731312), (104, 194026534), (106, 190365656), (169, 119400944), (208, 97013267), (212, 95182828), (338, 59700472), (424, 47591414), (676, 29850236), (689, 29287024), (848, 23795707), (1352, 14925118), (1378, 14643512), (2197, 9184688), (2704, 7462559), (2756, 7321756), (4394, 4592344), (5512, 3660878), (8788, 2296172), (8957, 2252848), (10831, 1863056), (11024, 1830439), (17576, 1148086), (17914, 1126424), (21662, 931528), (35152, 574043), (35828, 563212), (43324, 465764), (71656, 281606), (86648, 232882), (116441, 173296), (140803, 143312)]