21031788

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 52424064

約数和(自身を除く): 31392276

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 131, 204, 262, 393, 524, 786, 787, 1572, 1574, 2227, 2361, 3148, 4454, 4722, 6681, 8908, 9444, 13362, 13379, 26724, 26758, 40137, 53516, 80274, 103097, 160548, 206194, 309291, 412388, 618582, 1237164, 1752649, 3505298, 5257947, 7010596, 10515894, 21031788]

約数ペア:

[(1, 21031788), (2, 10515894), (3, 7010596), (4, 5257947), (6, 3505298), (12, 1752649), (17, 1237164), (34, 618582), (51, 412388), (68, 309291), (102, 206194), (131, 160548), (204, 103097), (262, 80274), (393, 53516), (524, 40137), (786, 26758), (787, 26724), (1572, 13379), (1574, 13362), (2227, 9444), (2361, 8908), (3148, 6681), (4454, 4722)]