20211988888

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{199739}}^1$

素因数の和:199904

約数の個数: 64

約数和(自身を含む): 46978848000

約数和(自身を除く): 26766859112

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 139, 182, 278, 364, 556, 728, 973, 1112, 1807, 1946, 3614, 3892, 7228, 7784, 12649, 14456, 25298, 50596, 101192, 199739, 399478, 798956, 1398173, 1597912, 2596607, 2796346, 5193214, 5592692, 10386428, 11185384, 18176249, 20772856, 27763721, 36352498, 55527442, 72704996, 111054884, 145409992, 194346047, 222109768, 360928373, 388692094, 721856746, 777384188, 1443713492, 1554768376, 2526498611, 2887426984, 5052997222, 10105994444, 20211988888]

約数ペア:

[(1, 20211988888), (2, 10105994444), (4, 5052997222), (7, 2887426984), (8, 2526498611), (13, 1554768376), (14, 1443713492), (26, 777384188), (28, 721856746), (52, 388692094), (56, 360928373), (91, 222109768), (104, 194346047), (139, 145409992), (182, 111054884), (278, 72704996), (364, 55527442), (556, 36352498), (728, 27763721), (973, 20772856), (1112, 18176249), (1807, 11185384), (1946, 10386428), (3614, 5592692), (3892, 5193214), (7228, 2796346), (7784, 2596607), (12649, 1597912), (14456, 1398173), (25298, 798956), (50596, 399478), (101192, 199739)]