21374865

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27941}}^1$

素因数の和:27969

約数の個数: 24

約数和(自身を含む): 39230568

約数和(自身を除く): 17855703

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27941, 83823, 139705, 251469, 419115, 474997, 1257345, 1424991, 2374985, 4274973, 7124955, 21374865]

約数ペア:

[(1, 21374865), (3, 7124955), (5, 4274973), (9, 2374985), (15, 1424991), (17, 1257345), (45, 474997), (51, 419115), (85, 251469), (153, 139705), (255, 83823), (765, 27941)]