21132020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{683}}^1$

素因数の和:729

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 36783628

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 170, 182, 221, 238, 260, 340, 364, 442, 455, 476, 595, 683, 884, 910, 1105, 1190, 1366, 1547, 1820, 2210, 2380, 2732, 3094, 3415, 4420, 4781, 6188, 6830, 7735, 8879, 9562, 11611, 13660, 15470, 17758, 19124, 23222, 23905, 30940, 35516, 44395, 46444, 47810, 58055, 62153, 81277, 88790, 95620, 116110, 124306, 150943, 162554, 177580, 232220, 248612, 301886, 310765, 325108, 406385, 603772, 621530, 754715, 812770, 1056601, 1243060, 1509430, 1625540, 2113202, 3018860, 4226404, 5283005, 10566010, 21132020]

約数ペア:

[(1, 21132020), (2, 10566010), (4, 5283005), (5, 4226404), (7, 3018860), (10, 2113202), (13, 1625540), (14, 1509430), (17, 1243060), (20, 1056601), (26, 812770), (28, 754715), (34, 621530), (35, 603772), (52, 406385), (65, 325108), (68, 310765), (70, 301886), (85, 248612), (91, 232220), (119, 177580), (130, 162554), (140, 150943), (170, 124306), (182, 116110), (221, 95620), (238, 88790), (260, 81277), (340, 62153), (364, 58055), (442, 47810), (455, 46444), (476, 44395), (595, 35516), (683, 30940), (884, 23905), (910, 23222), (1105, 19124), (1190, 17758), (1366, 15470), (1547, 13660), (1820, 11611), (2210, 9562), (2380, 8879), (2732, 7735), (3094, 6830), (3415, 6188), (4420, 4781)]