19941320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{311}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 51667200

約数和(自身を除く): 31725880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 311, 458, 622, 916, 1145, 1244, 1555, 1603, 1832, 2177, 2290, 2488, 3110, 3206, 4354, 4580, 6220, 6412, 8015, 8708, 9160, 10885, 12440, 12824, 16030, 17416, 21770, 32060, 43540, 64120, 71219, 87080, 142438, 284876, 356095, 498533, 569752, 712190, 997066, 1424380, 1994132, 2492665, 2848760, 3988264, 4985330, 9970660, 19941320]

約数ペア:

[(1, 19941320), (2, 9970660), (4, 4985330), (5, 3988264), (7, 2848760), (8, 2492665), (10, 1994132), (14, 1424380), (20, 997066), (28, 712190), (35, 569752), (40, 498533), (56, 356095), (70, 284876), (140, 142438), (229, 87080), (280, 71219), (311, 64120), (458, 43540), (622, 32060), (916, 21770), (1145, 17416), (1244, 16030), (1555, 12824), (1603, 12440), (1832, 10885), (2177, 9160), (2290, 8708), (2488, 8015), (3110, 6412), (3206, 6220), (4354, 4580)]