21120424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6551}}^1$

素因数の和:6601

約数の個数: 32

約数和(自身を含む): 44029440

約数和(自身を除く): 22909016

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6551, 13102, 26204, 52408, 85163, 170326, 203081, 340652, 406162, 681304, 812324, 1624648, 2640053, 5280106, 10560212, 21120424]

約数ペア:

[(1, 21120424), (2, 10560212), (4, 5280106), (8, 2640053), (13, 1624648), (26, 812324), (31, 681304), (52, 406162), (62, 340652), (104, 203081), (124, 170326), (248, 85163), (403, 52408), (806, 26204), (1612, 13102), (3224, 6551)]