1998640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:146

約数の個数: 80

約数和(自身を含む): 5499648

約数和(自身を除く): 3501008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 83, 86, 112, 140, 166, 172, 215, 280, 301, 332, 344, 415, 430, 560, 581, 602, 664, 688, 830, 860, 1162, 1204, 1328, 1505, 1660, 1720, 2324, 2408, 2905, 3010, 3320, 3440, 3569, 4648, 4816, 5810, 6020, 6640, 7138, 9296, 11620, 12040, 14276, 17845, 23240, 24080, 24983, 28552, 35690, 46480, 49966, 57104, 71380, 99932, 124915, 142760, 199864, 249830, 285520, 399728, 499660, 999320, 1998640]

約数ペア:

[(1, 1998640), (2, 999320), (4, 499660), (5, 399728), (7, 285520), (8, 249830), (10, 199864), (14, 142760), (16, 124915), (20, 99932), (28, 71380), (35, 57104), (40, 49966), (43, 46480), (56, 35690), (70, 28552), (80, 24983), (83, 24080), (86, 23240), (112, 17845), (140, 14276), (166, 12040), (172, 11620), (215, 9296), (280, 7138), (301, 6640), (332, 6020), (344, 5810), (415, 4816), (430, 4648), (560, 3569), (581, 3440), (602, 3320), (664, 3010), (688, 2905), (830, 2408), (860, 2324), (1162, 1720), (1204, 1660), (1328, 1505)]