21980035

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1543}}^1$

素因数の和:1603

約数の個数: 32

約数和(自身を含む): 33795072

約数和(自身を除く): 11815037

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 1543, 2035, 2849, 7715, 10801, 14245, 16973, 54005, 57091, 84865, 118811, 285455, 399637, 594055, 628001, 1998185, 3140005, 4396007, 21980035]

約数ペア:

[(1, 21980035), (5, 4396007), (7, 3140005), (11, 1998185), (35, 628001), (37, 594055), (55, 399637), (77, 285455), (185, 118811), (259, 84865), (385, 57091), (407, 54005), (1295, 16973), (1543, 14245), (2035, 10801), (2849, 7715)]