8980720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 120

約数和(自身を含む): 25444800

約数和(自身を除く): 16464080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 79, 80, 98, 112, 116, 140, 145, 158, 196, 203, 232, 245, 280, 290, 316, 392, 395, 406, 464, 490, 553, 560, 580, 632, 784, 790, 812, 980, 1015, 1106, 1160, 1264, 1421, 1580, 1624, 1960, 2030, 2212, 2291, 2320, 2765, 2842, 3160, 3248, 3871, 3920, 4060, 4424, 4582, 5530, 5684, 6320, 7105, 7742, 8120, 8848, 9164, 11060, 11368, 11455, 14210, 15484, 16037, 16240, 18328, 19355, 22120, 22736, 22910, 28420, 30968, 32074, 36656, 38710, 44240, 45820, 56840, 61936, 64148, 77420, 80185, 91640, 112259, 113680, 128296, 154840, 160370, 183280, 224518, 256592, 309680, 320740, 449036, 561295, 641480, 898072, 1122590, 1282960, 1796144, 2245180, 4490360, 8980720]

約数ペア:

[(1, 8980720), (2, 4490360), (4, 2245180), (5, 1796144), (7, 1282960), (8, 1122590), (10, 898072), (14, 641480), (16, 561295), (20, 449036), (28, 320740), (29, 309680), (35, 256592), (40, 224518), (49, 183280), (56, 160370), (58, 154840), (70, 128296), (79, 113680), (80, 112259), (98, 91640), (112, 80185), (116, 77420), (140, 64148), (145, 61936), (158, 56840), (196, 45820), (203, 44240), (232, 38710), (245, 36656), (280, 32074), (290, 30968), (316, 28420), (392, 22910), (395, 22736), (406, 22120), (464, 19355), (490, 18328), (553, 16240), (560, 16037), (580, 15484), (632, 14210), (784, 11455), (790, 11368), (812, 11060), (980, 9164), (1015, 8848), (1106, 8120), (1160, 7742), (1264, 7105), (1421, 6320), (1580, 5684), (1624, 5530), (1960, 4582), (2030, 4424), (2212, 4060), (2291, 3920), (2320, 3871), (2765, 3248), (2842, 3160)]