20515014772

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{677779}}^1$

素因数の和:677860

約数の個数: 48

約数和(自身を含む): 43724943360

約数和(自身を除く): 23209928588

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 47, 92, 94, 161, 188, 322, 329, 644, 658, 1081, 1316, 2162, 4324, 7567, 15134, 30268, 677779, 1355558, 2711116, 4744453, 9488906, 15588917, 18977812, 31177834, 31855613, 62355668, 63711226, 109122419, 127422452, 218244838, 222989291, 436489676, 445978582, 732679099, 891957164, 1465358198, 2930716396, 5128753693, 10257507386, 20515014772]

約数ペア:

[(1, 20515014772), (2, 10257507386), (4, 5128753693), (7, 2930716396), (14, 1465358198), (23, 891957164), (28, 732679099), (46, 445978582), (47, 436489676), (92, 222989291), (94, 218244838), (161, 127422452), (188, 109122419), (322, 63711226), (329, 62355668), (644, 31855613), (658, 31177834), (1081, 18977812), (1316, 15588917), (2162, 9488906), (4324, 4744453), (7567, 2711116), (15134, 1355558), (30268, 677779)]