21278582

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{1297}}^1$

素因数の和:1943

約数の個数: 16

約数和(自身を含む): 34454112

約数和(自身を除く): 13175530

約数列:

[1, 2, 13, 26, 631, 1262, 1297, 2594, 8203, 16406, 16861, 33722, 818407, 1636814, 10639291, 21278582]

約数ペア:

[(1, 21278582), (2, 10639291), (13, 1636814), (26, 818407), (631, 33722), (1262, 16861), (1297, 16406), (2594, 8203)]