81439764

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3221}}^1$

素因数の和:3285

約数の個数: 72

約数和(自身を含む): 226261728

約数和(自身を除く): 144821964

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 903, 1204, 1806, 2107, 3221, 3612, 4214, 6321, 6442, 8428, 9663, 12642, 12884, 19326, 22547, 25284, 38652, 45094, 67641, 90188, 135282, 138503, 157829, 270564, 277006, 315658, 415509, 473487, 554012, 631316, 831018, 946974, 969521, 1662036, 1893948, 1939042, 2908563, 3878084, 5817126, 6786647, 11634252, 13573294, 20359941, 27146588, 40719882, 81439764]

約数ペア:

[(1, 81439764), (2, 40719882), (3, 27146588), (4, 20359941), (6, 13573294), (7, 11634252), (12, 6786647), (14, 5817126), (21, 3878084), (28, 2908563), (42, 1939042), (43, 1893948), (49, 1662036), (84, 969521), (86, 946974), (98, 831018), (129, 631316), (147, 554012), (172, 473487), (196, 415509), (258, 315658), (294, 277006), (301, 270564), (516, 157829), (588, 138503), (602, 135282), (903, 90188), (1204, 67641), (1806, 45094), (2107, 38652), (3221, 25284), (3612, 22547), (4214, 19326), (6321, 12884), (6442, 12642), (8428, 9663)]