20695040

素因数分解:

$2^{11}\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 31196800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 47, 64, 80, 86, 94, 128, 160, 172, 188, 215, 235, 256, 320, 344, 376, 430, 470, 512, 640, 688, 752, 860, 940, 1024, 1280, 1376, 1504, 1720, 1880, 2021, 2048, 2560, 2752, 3008, 3440, 3760, 4042, 5120, 5504, 6016, 6880, 7520, 8084, 10105, 10240, 11008, 12032, 13760, 15040, 16168, 20210, 22016, 24064, 27520, 30080, 32336, 40420, 44032, 48128, 55040, 60160, 64672, 80840, 88064, 96256, 110080, 120320, 129344, 161680, 220160, 240640, 258688, 323360, 440320, 481280, 517376, 646720, 1034752, 1293440, 2069504, 2586880, 4139008, 5173760, 10347520, 20695040]

約数ペア:

[(1, 20695040), (2, 10347520), (4, 5173760), (5, 4139008), (8, 2586880), (10, 2069504), (16, 1293440), (20, 1034752), (32, 646720), (40, 517376), (43, 481280), (47, 440320), (64, 323360), (80, 258688), (86, 240640), (94, 220160), (128, 161680), (160, 129344), (172, 120320), (188, 110080), (215, 96256), (235, 88064), (256, 80840), (320, 64672), (344, 60160), (376, 55040), (430, 48128), (470, 44032), (512, 40420), (640, 32336), (688, 30080), (752, 27520), (860, 24064), (940, 22016), (1024, 20210), (1280, 16168), (1376, 15040), (1504, 13760), (1720, 12032), (1880, 11008), (2021, 10240), (2048, 10105), (2560, 8084), (2752, 7520), (3008, 6880), (3440, 6016), (3760, 5504), (4042, 5120)]