21892090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:567

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 25697030

約数列:

[1, 2, 5, 10, 11, 17, 22, 23, 34, 46, 55, 85, 110, 115, 170, 187, 230, 253, 374, 391, 506, 509, 782, 935, 1018, 1265, 1870, 1955, 2530, 2545, 3910, 4301, 5090, 5599, 8602, 8653, 11198, 11707, 17306, 21505, 23414, 27995, 43010, 43265, 55990, 58535, 86530, 95183, 117070, 128777, 190366, 199019, 257554, 398038, 475915, 643885, 951830, 995095, 1287770, 1990190, 2189209, 4378418, 10946045, 21892090]

約数ペア:

[(1, 21892090), (2, 10946045), (5, 4378418), (10, 2189209), (11, 1990190), (17, 1287770), (22, 995095), (23, 951830), (34, 643885), (46, 475915), (55, 398038), (85, 257554), (110, 199019), (115, 190366), (170, 128777), (187, 117070), (230, 95183), (253, 86530), (374, 58535), (391, 55990), (506, 43265), (509, 43010), (782, 27995), (935, 23414), (1018, 21505), (1265, 17306), (1870, 11707), (1955, 11198), (2530, 8653), (2545, 8602), (3910, 5599), (4301, 5090)]