21497944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 43601040

約数和(自身を除く): 22103096

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 421, 491, 842, 982, 1684, 1964, 3368, 3928, 5473, 6383, 10946, 12766, 21892, 25532, 43784, 51064, 206711, 413422, 826844, 1653688, 2687243, 5374486, 10748972, 21497944]

約数ペア:

[(1, 21497944), (2, 10748972), (4, 5374486), (8, 2687243), (13, 1653688), (26, 826844), (52, 413422), (104, 206711), (421, 51064), (491, 43784), (842, 25532), (982, 21892), (1684, 12766), (1964, 10946), (3368, 6383), (3928, 5473)]