28711980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{853}}^1$

素因数の和:896

約数の個数: 144

約数和(自身を含む): 100717344

約数和(自身を除く): 72005364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 30, 33, 34, 36, 44, 45, 51, 55, 60, 66, 68, 85, 90, 99, 102, 110, 132, 153, 165, 170, 180, 187, 198, 204, 220, 255, 306, 330, 340, 374, 396, 495, 510, 561, 612, 660, 748, 765, 853, 935, 990, 1020, 1122, 1530, 1683, 1706, 1870, 1980, 2244, 2559, 2805, 3060, 3366, 3412, 3740, 4265, 5118, 5610, 6732, 7677, 8415, 8530, 9383, 10236, 11220, 12795, 14501, 15354, 16830, 17060, 18766, 25590, 28149, 29002, 30708, 33660, 37532, 38385, 43503, 46915, 51180, 56298, 58004, 72505, 76770, 84447, 87006, 93830, 112596, 130509, 140745, 145010, 153540, 159511, 168894, 174012, 187660, 217515, 261018, 281490, 290020, 319022, 337788, 422235, 435030, 478533, 522036, 562980, 638044, 652545, 797555, 844470, 870060, 957066, 1305090, 1435599, 1595110, 1688940, 1914132, 2392665, 2610180, 2871198, 3190220, 4785330, 5742396, 7177995, 9570660, 14355990, 28711980]

約数ペア:

[(1, 28711980), (2, 14355990), (3, 9570660), (4, 7177995), (5, 5742396), (6, 4785330), (9, 3190220), (10, 2871198), (11, 2610180), (12, 2392665), (15, 1914132), (17, 1688940), (18, 1595110), (20, 1435599), (22, 1305090), (30, 957066), (33, 870060), (34, 844470), (36, 797555), (44, 652545), (45, 638044), (51, 562980), (55, 522036), (60, 478533), (66, 435030), (68, 422235), (85, 337788), (90, 319022), (99, 290020), (102, 281490), (110, 261018), (132, 217515), (153, 187660), (165, 174012), (170, 168894), (180, 159511), (187, 153540), (198, 145010), (204, 140745), (220, 130509), (255, 112596), (306, 93830), (330, 87006), (340, 84447), (374, 76770), (396, 72505), (495, 58004), (510, 56298), (561, 51180), (612, 46915), (660, 43503), (748, 38385), (765, 37532), (853, 33660), (935, 30708), (990, 29002), (1020, 28149), (1122, 25590), (1530, 18766), (1683, 17060), (1706, 16830), (1870, 15354), (1980, 14501), (2244, 12795), (2559, 11220), (2805, 10236), (3060, 9383), (3366, 8530), (3412, 8415), (3740, 7677), (4265, 6732), (5118, 5610)]