280054775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:110

約数の個数: 144

約数和(自身を含む): 507967488

約数和(自身を除く): 227912713

約数列:

[1, 5, 7, 11, 13, 19, 25, 31, 35, 55, 65, 77, 91, 95, 133, 143, 155, 175, 209, 217, 247, 275, 325, 341, 361, 385, 403, 455, 475, 589, 665, 715, 775, 1001, 1045, 1085, 1235, 1463, 1705, 1729, 1805, 1925, 2015, 2275, 2387, 2527, 2717, 2821, 2945, 3325, 3575, 3971, 4123, 4433, 4693, 5005, 5225, 5425, 6175, 6479, 7315, 7657, 8525, 8645, 9025, 10075, 11191, 11935, 12635, 13585, 14105, 14725, 19019, 19855, 20615, 22165, 23465, 25025, 27797, 31031, 32395, 32851, 36575, 38285, 43225, 45353, 51623, 53599, 55955, 59675, 63175, 67925, 70525, 78337, 84227, 95095, 99275, 103075, 110825, 117325, 123101, 138985, 145483, 155155, 161975, 164255, 191425, 226765, 258115, 267995, 279775, 361361, 391685, 421135, 475475, 589589, 615505, 694925, 727415, 775775, 821275, 861707, 1018381, 1133825, 1290575, 1339975, 1600313, 1806805, 1958425, 2105675, 2947945, 3077525, 3637075, 4308535, 5091905, 8001565, 9034025, 11202191, 14739725, 21542675, 25459525, 40007825, 56010955, 280054775]

約数ペア:

[(1, 280054775), (5, 56010955), (7, 40007825), (11, 25459525), (13, 21542675), (19, 14739725), (25, 11202191), (31, 9034025), (35, 8001565), (55, 5091905), (65, 4308535), (77, 3637075), (91, 3077525), (95, 2947945), (133, 2105675), (143, 1958425), (155, 1806805), (175, 1600313), (209, 1339975), (217, 1290575), (247, 1133825), (275, 1018381), (325, 861707), (341, 821275), (361, 775775), (385, 727415), (403, 694925), (455, 615505), (475, 589589), (589, 475475), (665, 421135), (715, 391685), (775, 361361), (1001, 279775), (1045, 267995), (1085, 258115), (1235, 226765), (1463, 191425), (1705, 164255), (1729, 161975), (1805, 155155), (1925, 145483), (2015, 138985), (2275, 123101), (2387, 117325), (2527, 110825), (2717, 103075), (2821, 99275), (2945, 95095), (3325, 84227), (3575, 78337), (3971, 70525), (4123, 67925), (4433, 63175), (4693, 59675), (5005, 55955), (5225, 53599), (5425, 51623), (6175, 45353), (6479, 43225), (7315, 38285), (7657, 36575), (8525, 32851), (8645, 32395), (9025, 31031), (10075, 27797), (11191, 25025), (11935, 23465), (12635, 22165), (13585, 20615), (14105, 19855), (14725, 19019)]