18690260

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1064

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 23307052

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 991, 1886, 1982, 3772, 3964, 4715, 4955, 9430, 9910, 18860, 19820, 22793, 40631, 45586, 81262, 91172, 113965, 162524, 203155, 227930, 406310, 455860, 812620, 934513, 1869026, 3738052, 4672565, 9345130, 18690260]

約数ペア:

[(1, 18690260), (2, 9345130), (4, 4672565), (5, 3738052), (10, 1869026), (20, 934513), (23, 812620), (41, 455860), (46, 406310), (82, 227930), (92, 203155), (115, 162524), (164, 113965), (205, 91172), (230, 81262), (410, 45586), (460, 40631), (820, 22793), (943, 19820), (991, 18860), (1886, 9910), (1982, 9430), (3772, 4955), (3964, 4715)]