21782080

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1583}}^1$

素因数の和:1643

約数の個数: 56

約数和(自身を含む): 53108352

約数和(自身を除く): 31326272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1583, 1720, 2752, 3166, 3440, 6332, 6880, 7915, 12664, 13760, 15830, 25328, 31660, 50656, 63320, 68069, 101312, 126640, 136138, 253280, 272276, 340345, 506560, 544552, 680690, 1089104, 1361380, 2178208, 2722760, 4356416, 5445520, 10891040, 21782080]

約数ペア:

[(1, 21782080), (2, 10891040), (4, 5445520), (5, 4356416), (8, 2722760), (10, 2178208), (16, 1361380), (20, 1089104), (32, 680690), (40, 544552), (43, 506560), (64, 340345), (80, 272276), (86, 253280), (160, 136138), (172, 126640), (215, 101312), (320, 68069), (344, 63320), (430, 50656), (688, 31660), (860, 25328), (1376, 15830), (1583, 13760), (1720, 12664), (2752, 7915), (3166, 6880), (3440, 6332)]