18933760

素因数分解:

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

素因数の和:113

約数の個数: 72

約数和(自身を含む): 46511010

約数和(自身を除く): 27577250

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 512, 640, 688, 860, 1024, 1280, 1376, 1720, 1849, 2048, 2560, 2752, 3440, 3698, 5120, 5504, 6880, 7396, 9245, 10240, 11008, 13760, 14792, 18490, 22016, 27520, 29584, 36980, 44032, 55040, 59168, 73960, 88064, 110080, 118336, 147920, 220160, 236672, 295840, 440320, 473344, 591680, 946688, 1183360, 1893376, 2366720, 3786752, 4733440, 9466880, 18933760]

約数ペア:

[(1, 18933760), (2, 9466880), (4, 4733440), (5, 3786752), (8, 2366720), (10, 1893376), (16, 1183360), (20, 946688), (32, 591680), (40, 473344), (43, 440320), (64, 295840), (80, 236672), (86, 220160), (128, 147920), (160, 118336), (172, 110080), (215, 88064), (256, 73960), (320, 59168), (344, 55040), (430, 44032), (512, 36980), (640, 29584), (688, 27520), (860, 22016), (1024, 18490), (1280, 14792), (1376, 13760), (1720, 11008), (1849, 10240), (2048, 9245), (2560, 7396), (2752, 6880), (3440, 5504), (3698, 5120)]