20288346

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 46835712

約数和(自身を除く): 26547366

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 43, 46, 69, 78, 86, 129, 138, 258, 263, 299, 526, 559, 598, 789, 897, 989, 1118, 1578, 1677, 1794, 1978, 2967, 3354, 3419, 5934, 6049, 6838, 10257, 11309, 12098, 12857, 18147, 20514, 22618, 25714, 33927, 36294, 38571, 67854, 77142, 78637, 147017, 157274, 235911, 260107, 294034, 441051, 471822, 520214, 780321, 882102, 1560642, 3381391, 6762782, 10144173, 20288346]

約数ペア:

[(1, 20288346), (2, 10144173), (3, 6762782), (6, 3381391), (13, 1560642), (23, 882102), (26, 780321), (39, 520214), (43, 471822), (46, 441051), (69, 294034), (78, 260107), (86, 235911), (129, 157274), (138, 147017), (258, 78637), (263, 77142), (299, 67854), (526, 38571), (559, 36294), (598, 33927), (789, 25714), (897, 22618), (989, 20514), (1118, 18147), (1578, 12857), (1677, 12098), (1794, 11309), (1978, 10257), (2967, 6838), (3354, 6049), (3419, 5934)]