21240530

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 39178944

約数和(自身を除く): 17938414

約数列:

[1, 2, 5, 10, 83, 157, 163, 166, 314, 326, 415, 785, 815, 830, 1570, 1630, 13031, 13529, 25591, 26062, 27058, 51182, 65155, 67645, 127955, 130310, 135290, 255910, 2124053, 4248106, 10620265, 21240530]

約数ペア:

[(1, 21240530), (2, 10620265), (5, 4248106), (10, 2124053), (83, 255910), (157, 135290), (163, 130310), (166, 127955), (314, 67645), (326, 65155), (415, 51182), (785, 27058), (815, 26062), (830, 25591), (1570, 13529), (1630, 13031)]