21142512

素因数分解:

$2^4\times 3^3\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:575

約数の個数: 80

約数和(自身を含む): 61380000

約数和(自身を除く): 40237488

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 109, 144, 216, 218, 327, 432, 436, 449, 654, 872, 898, 981, 1308, 1347, 1744, 1796, 1962, 2616, 2694, 2943, 3592, 3924, 4041, 5232, 5388, 5886, 7184, 7848, 8082, 10776, 11772, 12123, 15696, 16164, 21552, 23544, 24246, 32328, 47088, 48492, 48941, 64656, 96984, 97882, 146823, 193968, 195764, 293646, 391528, 440469, 587292, 783056, 880938, 1174584, 1321407, 1761876, 2349168, 2642814, 3523752, 5285628, 7047504, 10571256, 21142512]

約数ペア:

[(1, 21142512), (2, 10571256), (3, 7047504), (4, 5285628), (6, 3523752), (8, 2642814), (9, 2349168), (12, 1761876), (16, 1321407), (18, 1174584), (24, 880938), (27, 783056), (36, 587292), (48, 440469), (54, 391528), (72, 293646), (108, 195764), (109, 193968), (144, 146823), (216, 97882), (218, 96984), (327, 64656), (432, 48941), (436, 48492), (449, 47088), (654, 32328), (872, 24246), (898, 23544), (981, 21552), (1308, 16164), (1347, 15696), (1744, 12123), (1796, 11772), (1962, 10776), (2616, 8082), (2694, 7848), (2943, 7184), (3592, 5886), (3924, 5388), (4041, 5232)]