21135216

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:526

約数の個数: 80

約数和(自身を含む): 58924800

約数和(自身を除く): 37789584

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 59, 68, 102, 118, 136, 177, 204, 236, 272, 354, 408, 439, 472, 708, 816, 878, 944, 1003, 1317, 1416, 1756, 2006, 2634, 2832, 3009, 3512, 4012, 5268, 6018, 7024, 7463, 8024, 10536, 12036, 14926, 16048, 21072, 22389, 24072, 25901, 29852, 44778, 48144, 51802, 59704, 77703, 89556, 103604, 119408, 155406, 179112, 207208, 310812, 358224, 414416, 440317, 621624, 880634, 1243248, 1320951, 1761268, 2641902, 3522536, 5283804, 7045072, 10567608, 21135216]

約数ペア:

[(1, 21135216), (2, 10567608), (3, 7045072), (4, 5283804), (6, 3522536), (8, 2641902), (12, 1761268), (16, 1320951), (17, 1243248), (24, 880634), (34, 621624), (48, 440317), (51, 414416), (59, 358224), (68, 310812), (102, 207208), (118, 179112), (136, 155406), (177, 119408), (204, 103604), (236, 89556), (272, 77703), (354, 59704), (408, 51802), (439, 48144), (472, 44778), (708, 29852), (816, 25901), (878, 24072), (944, 22389), (1003, 21072), (1317, 16048), (1416, 14926), (1756, 12036), (2006, 10536), (2634, 8024), (2832, 7463), (3009, 7024), (3512, 6018), (4012, 5268)]