71491840

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:208

約数の個数: 144

約数和(自身を含む): 200148480

約数和(自身を除く): 128656640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 101, 112, 128, 140, 158, 160, 202, 224, 256, 280, 316, 320, 395, 404, 448, 505, 553, 560, 632, 640, 707, 790, 808, 896, 1010, 1106, 1120, 1264, 1280, 1414, 1580, 1616, 1792, 2020, 2212, 2240, 2528, 2765, 2828, 3160, 3232, 3535, 4040, 4424, 4480, 5056, 5530, 5656, 6320, 6464, 7070, 7979, 8080, 8848, 8960, 10112, 11060, 11312, 12640, 12928, 14140, 15958, 16160, 17696, 20224, 22120, 22624, 25280, 25856, 28280, 31916, 32320, 35392, 39895, 44240, 45248, 50560, 55853, 56560, 63832, 64640, 70784, 79790, 88480, 90496, 101120, 111706, 113120, 127664, 129280, 141568, 159580, 176960, 180992, 223412, 226240, 255328, 279265, 319160, 353920, 446824, 452480, 510656, 558530, 638320, 707840, 893648, 904960, 1021312, 1117060, 1276640, 1787296, 2042624, 2234120, 2553280, 3574592, 4468240, 5106560, 7149184, 8936480, 10213120, 14298368, 17872960, 35745920, 71491840]

約数ペア:

[(1, 71491840), (2, 35745920), (4, 17872960), (5, 14298368), (7, 10213120), (8, 8936480), (10, 7149184), (14, 5106560), (16, 4468240), (20, 3574592), (28, 2553280), (32, 2234120), (35, 2042624), (40, 1787296), (56, 1276640), (64, 1117060), (70, 1021312), (79, 904960), (80, 893648), (101, 707840), (112, 638320), (128, 558530), (140, 510656), (158, 452480), (160, 446824), (202, 353920), (224, 319160), (256, 279265), (280, 255328), (316, 226240), (320, 223412), (395, 180992), (404, 176960), (448, 159580), (505, 141568), (553, 129280), (560, 127664), (632, 113120), (640, 111706), (707, 101120), (790, 90496), (808, 88480), (896, 79790), (1010, 70784), (1106, 64640), (1120, 63832), (1264, 56560), (1280, 55853), (1414, 50560), (1580, 45248), (1616, 44240), (1792, 39895), (2020, 35392), (2212, 32320), (2240, 31916), (2528, 28280), (2765, 25856), (2828, 25280), (3160, 22624), (3232, 22120), (3535, 20224), (4040, 17696), (4424, 16160), (4480, 15958), (5056, 14140), (5530, 12928), (5656, 12640), (6320, 11312), (6464, 11060), (7070, 10112), (7979, 8960), (8080, 8848)]