21299840

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1447}}^1$

素因数の和:1489

約数の個数: 64

約数和(自身を含む): 53170560

約数和(自身を除く): 31870720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1447, 1472, 1840, 2894, 2944, 3680, 5788, 7235, 7360, 11576, 14470, 14720, 23152, 28940, 33281, 46304, 57880, 66562, 92608, 115760, 133124, 166405, 185216, 231520, 266248, 332810, 463040, 532496, 665620, 926080, 1064992, 1331240, 2129984, 2662480, 4259968, 5324960, 10649920, 21299840]

約数ペア:

[(1, 21299840), (2, 10649920), (4, 5324960), (5, 4259968), (8, 2662480), (10, 2129984), (16, 1331240), (20, 1064992), (23, 926080), (32, 665620), (40, 532496), (46, 463040), (64, 332810), (80, 266248), (92, 231520), (115, 185216), (128, 166405), (160, 133124), (184, 115760), (230, 92608), (320, 66562), (368, 57880), (460, 46304), (640, 33281), (736, 28940), (920, 23152), (1447, 14720), (1472, 14470), (1840, 11576), (2894, 7360), (2944, 7235), (3680, 5788)]