20881566

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 47361600

約数和(自身を除く): 26480034

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 109, 174, 218, 261, 327, 367, 522, 654, 734, 981, 1101, 1962, 2202, 3161, 3303, 6322, 6606, 9483, 10643, 18966, 21286, 28449, 31929, 40003, 56898, 63858, 80006, 95787, 120009, 191574, 240018, 360027, 720054, 1160087, 2320174, 3480261, 6960522, 10440783, 20881566]

約数ペア:

[(1, 20881566), (2, 10440783), (3, 6960522), (6, 3480261), (9, 2320174), (18, 1160087), (29, 720054), (58, 360027), (87, 240018), (109, 191574), (174, 120009), (218, 95787), (261, 80006), (327, 63858), (367, 56898), (522, 40003), (654, 31929), (734, 28449), (981, 21286), (1101, 18966), (1962, 10643), (2202, 9483), (3161, 6606), (3303, 6322)]