19861760

素因数分解:

$2^8\times 5^1\times {\mathrm{59}}^1\times {\mathrm{263}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 48565440

約数和(自身を除く): 28703680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 256, 263, 295, 320, 472, 526, 590, 640, 944, 1052, 1180, 1280, 1315, 1888, 2104, 2360, 2630, 3776, 4208, 4720, 5260, 7552, 8416, 9440, 10520, 15104, 15517, 16832, 18880, 21040, 31034, 33664, 37760, 42080, 62068, 67328, 75520, 77585, 84160, 124136, 155170, 168320, 248272, 310340, 336640, 496544, 620680, 993088, 1241360, 1986176, 2482720, 3972352, 4965440, 9930880, 19861760]

約数ペア:

[(1, 19861760), (2, 9930880), (4, 4965440), (5, 3972352), (8, 2482720), (10, 1986176), (16, 1241360), (20, 993088), (32, 620680), (40, 496544), (59, 336640), (64, 310340), (80, 248272), (118, 168320), (128, 155170), (160, 124136), (236, 84160), (256, 77585), (263, 75520), (295, 67328), (320, 62068), (472, 42080), (526, 37760), (590, 33664), (640, 31034), (944, 21040), (1052, 18880), (1180, 16832), (1280, 15517), (1315, 15104), (1888, 10520), (2104, 9440), (2360, 8416), (2630, 7552), (3776, 5260), (4208, 4720)]