71318120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 164505600

約数和(自身を除く): 93187480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 127, 139, 202, 254, 278, 404, 505, 508, 556, 635, 695, 808, 1010, 1016, 1112, 1270, 1390, 2020, 2540, 2780, 4040, 5080, 5560, 12827, 14039, 17653, 25654, 28078, 35306, 51308, 56156, 64135, 70195, 70612, 88265, 102616, 112312, 128270, 140390, 141224, 176530, 256540, 280780, 353060, 513080, 561560, 706120, 1782953, 3565906, 7131812, 8914765, 14263624, 17829530, 35659060, 71318120]

約数ペア:

[(1, 71318120), (2, 35659060), (4, 17829530), (5, 14263624), (8, 8914765), (10, 7131812), (20, 3565906), (40, 1782953), (101, 706120), (127, 561560), (139, 513080), (202, 353060), (254, 280780), (278, 256540), (404, 176530), (505, 141224), (508, 140390), (556, 128270), (635, 112312), (695, 102616), (808, 88265), (1010, 70612), (1016, 70195), (1112, 64135), (1270, 56156), (1390, 51308), (2020, 35306), (2540, 28078), (2780, 25654), (4040, 17653), (5080, 14039), (5560, 12827)]