1780240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2$

素因数の和:65

約数の個数: 120

約数和(自身を含む): 5481792

約数和(自身を除く): 3701552

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 34, 35, 40, 44, 55, 56, 68, 70, 77, 80, 85, 88, 110, 112, 119, 136, 140, 154, 170, 176, 187, 220, 238, 272, 280, 289, 308, 340, 374, 385, 440, 476, 560, 578, 595, 616, 680, 748, 770, 880, 935, 952, 1156, 1190, 1232, 1309, 1360, 1445, 1496, 1540, 1870, 1904, 2023, 2312, 2380, 2618, 2890, 2992, 3080, 3179, 3740, 4046, 4624, 4760, 5236, 5780, 6160, 6358, 6545, 7480, 8092, 9520, 10115, 10472, 11560, 12716, 13090, 14960, 15895, 16184, 20230, 20944, 22253, 23120, 25432, 26180, 31790, 32368, 40460, 44506, 50864, 52360, 63580, 80920, 89012, 104720, 111265, 127160, 161840, 178024, 222530, 254320, 356048, 445060, 890120, 1780240]

約数ペア:

[(1, 1780240), (2, 890120), (4, 445060), (5, 356048), (7, 254320), (8, 222530), (10, 178024), (11, 161840), (14, 127160), (16, 111265), (17, 104720), (20, 89012), (22, 80920), (28, 63580), (34, 52360), (35, 50864), (40, 44506), (44, 40460), (55, 32368), (56, 31790), (68, 26180), (70, 25432), (77, 23120), (80, 22253), (85, 20944), (88, 20230), (110, 16184), (112, 15895), (119, 14960), (136, 13090), (140, 12716), (154, 11560), (170, 10472), (176, 10115), (187, 9520), (220, 8092), (238, 7480), (272, 6545), (280, 6358), (289, 6160), (308, 5780), (340, 5236), (374, 4760), (385, 4624), (440, 4046), (476, 3740), (560, 3179), (578, 3080), (595, 2992), (616, 2890), (680, 2618), (748, 2380), (770, 2312), (880, 2023), (935, 1904), (952, 1870), (1156, 1540), (1190, 1496), (1232, 1445), (1309, 1360)]