21287040

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11087}}^1$

素因数の和:11109

約数の個数: 64

約数和(自身を含む): 67858560

約数和(自身を除く): 46571520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 11087, 22174, 33261, 44348, 55435, 66522, 88696, 110870, 133044, 166305, 177392, 221740, 266088, 332610, 354784, 443480, 532176, 665220, 709568, 886960, 1064352, 1330440, 1419136, 1773920, 2128704, 2660880, 3547840, 4257408, 5321760, 7095680, 10643520, 21287040]

約数ペア:

[(1, 21287040), (2, 10643520), (3, 7095680), (4, 5321760), (5, 4257408), (6, 3547840), (8, 2660880), (10, 2128704), (12, 1773920), (15, 1419136), (16, 1330440), (20, 1064352), (24, 886960), (30, 709568), (32, 665220), (40, 532176), (48, 443480), (60, 354784), (64, 332610), (80, 266088), (96, 221740), (120, 177392), (128, 166305), (160, 133044), (192, 110870), (240, 88696), (320, 66522), (384, 55435), (480, 44348), (640, 33261), (960, 22174), (1920, 11087)]