280066840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 128

約数和(自身を含む): 717336000

約数和(自身を除く): 437269160

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 53, 68, 76, 85, 95, 106, 136, 152, 170, 190, 212, 265, 323, 340, 380, 409, 424, 530, 646, 680, 760, 818, 901, 1007, 1060, 1292, 1615, 1636, 1802, 2014, 2045, 2120, 2584, 3230, 3272, 3604, 4028, 4090, 4505, 5035, 6460, 6953, 7208, 7771, 8056, 8180, 9010, 10070, 12920, 13906, 15542, 16360, 17119, 18020, 20140, 21677, 27812, 31084, 34238, 34765, 36040, 38855, 40280, 43354, 55624, 62168, 68476, 69530, 77710, 85595, 86708, 108385, 132107, 136952, 139060, 155420, 171190, 173416, 216770, 264214, 278120, 310840, 342380, 368509, 411863, 433540, 528428, 660535, 684760, 737018, 823726, 867080, 1056856, 1321070, 1474036, 1647452, 1842545, 2059315, 2642140, 2948072, 3294904, 3685090, 4118630, 5284280, 7001671, 7370180, 8237260, 14003342, 14740360, 16474520, 28006684, 35008355, 56013368, 70016710, 140033420, 280066840]

約数ペア:

[(1, 280066840), (2, 140033420), (4, 70016710), (5, 56013368), (8, 35008355), (10, 28006684), (17, 16474520), (19, 14740360), (20, 14003342), (34, 8237260), (38, 7370180), (40, 7001671), (53, 5284280), (68, 4118630), (76, 3685090), (85, 3294904), (95, 2948072), (106, 2642140), (136, 2059315), (152, 1842545), (170, 1647452), (190, 1474036), (212, 1321070), (265, 1056856), (323, 867080), (340, 823726), (380, 737018), (409, 684760), (424, 660535), (530, 528428), (646, 433540), (680, 411863), (760, 368509), (818, 342380), (901, 310840), (1007, 278120), (1060, 264214), (1292, 216770), (1615, 173416), (1636, 171190), (1802, 155420), (2014, 139060), (2045, 136952), (2120, 132107), (2584, 108385), (3230, 86708), (3272, 85595), (3604, 77710), (4028, 69530), (4090, 68476), (4505, 62168), (5035, 55624), (6460, 43354), (6953, 40280), (7208, 38855), (7771, 36040), (8056, 34765), (8180, 34238), (9010, 31084), (10070, 27812), (12920, 21677), (13906, 20140), (15542, 18020), (16360, 17119)]