20409332008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1871}}^1\times {\mathrm{1979}}^1$

素因数の和:3922

約数の個数: 64

約数和(自身を含む): 42032390400

約数和(自身を除く): 21623058392

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 1871, 1979, 2756, 3742, 3958, 5512, 7484, 7916, 14968, 15832, 24323, 25727, 48646, 51454, 97292, 99163, 102908, 104887, 194584, 198326, 205816, 209774, 396652, 419548, 793304, 839096, 1289119, 1363531, 2578238, 2727062, 3702709, 5156476, 5454124, 7405418, 10312952, 10908248, 14810836, 29621672, 48135217, 96270434, 192540868, 196243577, 385081736, 392487154, 784974308, 1569948616, 2551166501, 5102333002, 10204666004, 20409332008]

約数ペア:

[(1, 20409332008), (2, 10204666004), (4, 5102333002), (8, 2551166501), (13, 1569948616), (26, 784974308), (52, 392487154), (53, 385081736), (104, 196243577), (106, 192540868), (212, 96270434), (424, 48135217), (689, 29621672), (1378, 14810836), (1871, 10908248), (1979, 10312952), (2756, 7405418), (3742, 5454124), (3958, 5156476), (5512, 3702709), (7484, 2727062), (7916, 2578238), (14968, 1363531), (15832, 1289119), (24323, 839096), (25727, 793304), (48646, 419548), (51454, 396652), (97292, 209774), (99163, 205816), (102908, 198326), (104887, 194584)]