21031040

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1933}}^1$

素因数の和:1969

約数の個数: 64

約数和(自身を含む): 53262360

約数和(自身を除く): 32231320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 1933, 2176, 2720, 3866, 5440, 7732, 9665, 10880, 15464, 19330, 30928, 32861, 38660, 61856, 65722, 77320, 123712, 131444, 154640, 164305, 247424, 262888, 309280, 328610, 525776, 618560, 657220, 1051552, 1237120, 1314440, 2103104, 2628880, 4206208, 5257760, 10515520, 21031040]

約数ペア:

[(1, 21031040), (2, 10515520), (4, 5257760), (5, 4206208), (8, 2628880), (10, 2103104), (16, 1314440), (17, 1237120), (20, 1051552), (32, 657220), (34, 618560), (40, 525776), (64, 328610), (68, 309280), (80, 262888), (85, 247424), (128, 164305), (136, 154640), (160, 131444), (170, 123712), (272, 77320), (320, 65722), (340, 61856), (544, 38660), (640, 32861), (680, 30928), (1088, 19330), (1360, 15464), (1933, 10880), (2176, 9665), (2720, 7732), (3866, 5440)]