21465981

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1637}}^1$

素因数の和:1721

約数の個数: 24

約数和(自身を含む): 32707584

約数和(自身を除く): 11241603

約数列:

[1, 3, 9, 31, 47, 93, 141, 279, 423, 1457, 1637, 4371, 4911, 13113, 14733, 50747, 76939, 152241, 230817, 456723, 692451, 2385109, 7155327, 21465981]

約数ペア:

[(1, 21465981), (3, 7155327), (9, 2385109), (31, 692451), (47, 456723), (93, 230817), (141, 152241), (279, 76939), (423, 50747), (1457, 14733), (1637, 13113), (4371, 4911)]