80218880

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{1279}}^1$

素因数の和:1314

約数の個数: 108

約数和(自身を含む): 223695360

約数和(自身を除く): 143476480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1279, 1280, 1568, 1792, 1960, 2240, 2558, 3136, 3920, 4480, 5116, 6272, 6395, 7840, 8953, 8960, 10232, 12544, 12790, 15680, 17906, 20464, 25580, 31360, 35812, 40928, 44765, 51160, 62671, 62720, 71624, 81856, 89530, 102320, 125342, 143248, 163712, 179060, 204640, 250684, 286496, 313355, 327424, 358120, 409280, 501368, 572992, 626710, 716240, 818560, 1002736, 1145984, 1253420, 1432480, 1637120, 2005472, 2291968, 2506840, 2864960, 4010944, 5013680, 5729920, 8021888, 10027360, 11459840, 16043776, 20054720, 40109440, 80218880]

約数ペア:

[(1, 80218880), (2, 40109440), (4, 20054720), (5, 16043776), (7, 11459840), (8, 10027360), (10, 8021888), (14, 5729920), (16, 5013680), (20, 4010944), (28, 2864960), (32, 2506840), (35, 2291968), (40, 2005472), (49, 1637120), (56, 1432480), (64, 1253420), (70, 1145984), (80, 1002736), (98, 818560), (112, 716240), (128, 626710), (140, 572992), (160, 501368), (196, 409280), (224, 358120), (245, 327424), (256, 313355), (280, 286496), (320, 250684), (392, 204640), (448, 179060), (490, 163712), (560, 143248), (640, 125342), (784, 102320), (896, 89530), (980, 81856), (1120, 71624), (1279, 62720), (1280, 62671), (1568, 51160), (1792, 44765), (1960, 40928), (2240, 35812), (2558, 31360), (3136, 25580), (3920, 20464), (4480, 17906), (5116, 15680), (6272, 12790), (6395, 12544), (7840, 10232), (8953, 8960)]