19980558

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{829}}^1$

素因数の和:953

約数の個数: 48

約数和(自身を含む): 47130720

約数和(自身を除く): 27150162

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 103, 117, 206, 234, 309, 618, 829, 927, 1339, 1658, 1854, 2487, 2678, 4017, 4974, 7461, 8034, 10777, 12051, 14922, 21554, 24102, 32331, 64662, 85387, 96993, 170774, 193986, 256161, 512322, 768483, 1110031, 1536966, 2220062, 3330093, 6660186, 9990279, 19980558]

約数ペア:

[(1, 19980558), (2, 9990279), (3, 6660186), (6, 3330093), (9, 2220062), (13, 1536966), (18, 1110031), (26, 768483), (39, 512322), (78, 256161), (103, 193986), (117, 170774), (206, 96993), (234, 85387), (309, 64662), (618, 32331), (829, 24102), (927, 21554), (1339, 14922), (1658, 12051), (1854, 10777), (2487, 8034), (2678, 7461), (4017, 4974)]