78721440

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{3347}}^1$

素因数の和:3379

約数の個数: 144

約数和(自身を含む): 288544032

約数和(自身を除く): 209822592

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3347, 3360, 3920, 4704, 5880, 6694, 7840, 10041, 11760, 13388, 16735, 20082, 23429, 23520, 26776, 33470, 40164, 46858, 50205, 53552, 66940, 70287, 80328, 93716, 100410, 107104, 117145, 133880, 140574, 160656, 164003, 187432, 200820, 234290, 267760, 281148, 321312, 328006, 351435, 374864, 401640, 468580, 492009, 535520, 562296, 656012, 702870, 749728, 803280, 820015, 937160, 984018, 1124592, 1312024, 1405740, 1606560, 1640030, 1874320, 1968036, 2249184, 2460045, 2624048, 2811480, 3280060, 3748640, 3936072, 4920090, 5248096, 5622960, 6560120, 7872144, 9840180, 11245920, 13120240, 15744288, 19680360, 26240480, 39360720, 78721440]

約数ペア:

[(1, 78721440), (2, 39360720), (3, 26240480), (4, 19680360), (5, 15744288), (6, 13120240), (7, 11245920), (8, 9840180), (10, 7872144), (12, 6560120), (14, 5622960), (15, 5248096), (16, 4920090), (20, 3936072), (21, 3748640), (24, 3280060), (28, 2811480), (30, 2624048), (32, 2460045), (35, 2249184), (40, 1968036), (42, 1874320), (48, 1640030), (49, 1606560), (56, 1405740), (60, 1312024), (70, 1124592), (80, 984018), (84, 937160), (96, 820015), (98, 803280), (105, 749728), (112, 702870), (120, 656012), (140, 562296), (147, 535520), (160, 492009), (168, 468580), (196, 401640), (210, 374864), (224, 351435), (240, 328006), (245, 321312), (280, 281148), (294, 267760), (336, 234290), (392, 200820), (420, 187432), (480, 164003), (490, 160656), (560, 140574), (588, 133880), (672, 117145), (735, 107104), (784, 100410), (840, 93716), (980, 80328), (1120, 70287), (1176, 66940), (1470, 53552), (1568, 50205), (1680, 46858), (1960, 40164), (2352, 33470), (2940, 26776), (3347, 23520), (3360, 23429), (3920, 20082), (4704, 16735), (5880, 13388), (6694, 11760), (7840, 10041)]