21121672

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 47880000

約数和(自身を除く): 26758328

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 37, 44, 52, 74, 88, 104, 143, 148, 286, 296, 407, 481, 499, 572, 814, 962, 998, 1144, 1628, 1924, 1996, 3256, 3848, 3992, 5291, 5489, 6487, 10582, 10978, 12974, 18463, 21164, 21956, 25948, 36926, 42328, 43912, 51896, 71357, 73852, 142714, 147704, 203093, 240019, 285428, 406186, 480038, 570856, 812372, 960076, 1624744, 1920152, 2640209, 5280418, 10560836, 21121672]

約数ペア:

[(1, 21121672), (2, 10560836), (4, 5280418), (8, 2640209), (11, 1920152), (13, 1624744), (22, 960076), (26, 812372), (37, 570856), (44, 480038), (52, 406186), (74, 285428), (88, 240019), (104, 203093), (143, 147704), (148, 142714), (286, 73852), (296, 71357), (407, 51896), (481, 43912), (499, 42328), (572, 36926), (814, 25948), (962, 21956), (998, 21164), (1144, 18463), (1628, 12974), (1924, 10978), (1996, 10582), (3256, 6487), (3848, 5489), (3992, 5291)]