21317541

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{283}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 34679808

約数和(自身を除く): 13362267

約数列:

[1, 3, 7, 17, 21, 51, 119, 211, 283, 357, 633, 849, 1477, 1981, 3587, 4431, 4811, 5943, 10761, 14433, 25109, 33677, 59713, 75327, 101031, 179139, 417991, 1015121, 1253973, 3045363, 7105847, 21317541]

約数ペア:

[(1, 21317541), (3, 7105847), (7, 3045363), (17, 1253973), (21, 1015121), (51, 417991), (119, 179139), (211, 101031), (283, 75327), (357, 59713), (633, 33677), (849, 25109), (1477, 14433), (1981, 10761), (3587, 5943), (4431, 4811)]