20891232

素因数分解:

$2^5\times 3^2\times {\mathrm{17}}^2\times {\mathrm{251}}^1$

素因数の和:301

約数の個数: 108

約数和(自身を含む): 63361116

約数和(自身を除く): 42469884

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 32, 34, 36, 48, 51, 68, 72, 96, 102, 136, 144, 153, 204, 251, 272, 288, 289, 306, 408, 502, 544, 578, 612, 753, 816, 867, 1004, 1156, 1224, 1506, 1632, 1734, 2008, 2259, 2312, 2448, 2601, 3012, 3468, 4016, 4267, 4518, 4624, 4896, 5202, 6024, 6936, 8032, 8534, 9036, 9248, 10404, 12048, 12801, 13872, 17068, 18072, 20808, 24096, 25602, 27744, 34136, 36144, 38403, 41616, 51204, 68272, 72288, 72539, 76806, 83232, 102408, 136544, 145078, 153612, 204816, 217617, 290156, 307224, 409632, 435234, 580312, 614448, 652851, 870468, 1160624, 1228896, 1305702, 1740936, 2321248, 2611404, 3481872, 5222808, 6963744, 10445616, 20891232]

約数ペア:

[(1, 20891232), (2, 10445616), (3, 6963744), (4, 5222808), (6, 3481872), (8, 2611404), (9, 2321248), (12, 1740936), (16, 1305702), (17, 1228896), (18, 1160624), (24, 870468), (32, 652851), (34, 614448), (36, 580312), (48, 435234), (51, 409632), (68, 307224), (72, 290156), (96, 217617), (102, 204816), (136, 153612), (144, 145078), (153, 136544), (204, 102408), (251, 83232), (272, 76806), (288, 72539), (289, 72288), (306, 68272), (408, 51204), (502, 41616), (544, 38403), (578, 36144), (612, 34136), (753, 27744), (816, 25602), (867, 24096), (1004, 20808), (1156, 18072), (1224, 17068), (1506, 13872), (1632, 12801), (1734, 12048), (2008, 10404), (2259, 9248), (2312, 9036), (2448, 8534), (2601, 8032), (3012, 6936), (3468, 6024), (4016, 5202), (4267, 4896), (4518, 4624)]