20715856

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4999}}^1$

素因数の和:5051

約数の個数: 40

約数和(自身を含む): 47120000

約数和(自身を除く): 26404144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 4999, 9998, 19996, 34993, 39992, 69986, 79984, 139972, 184963, 279944, 369926, 559888, 739852, 1294741, 1479704, 2589482, 2959408, 5178964, 10357928, 20715856]

約数ペア:

[(1, 20715856), (2, 10357928), (4, 5178964), (7, 2959408), (8, 2589482), (14, 1479704), (16, 1294741), (28, 739852), (37, 559888), (56, 369926), (74, 279944), (112, 184963), (148, 139972), (259, 79984), (296, 69986), (518, 39992), (592, 34993), (1036, 19996), (2072, 9998), (4144, 4999)]