20853280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:498

約数の個数: 96

約数和(自身を含む): 57746304

約数和(自身を除く): 36893024

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 70, 80, 86, 112, 140, 160, 172, 215, 224, 280, 301, 344, 430, 433, 560, 602, 688, 860, 866, 1120, 1204, 1376, 1505, 1720, 1732, 2165, 2408, 3010, 3031, 3440, 3464, 4330, 4816, 6020, 6062, 6880, 6928, 8660, 9632, 12040, 12124, 13856, 15155, 17320, 18619, 24080, 24248, 30310, 34640, 37238, 48160, 48496, 60620, 69280, 74476, 93095, 96992, 121240, 130333, 148952, 186190, 242480, 260666, 297904, 372380, 484960, 521332, 595808, 651665, 744760, 1042664, 1303330, 1489520, 2085328, 2606660, 2979040, 4170656, 5213320, 10426640, 20853280]

約数ペア:

[(1, 20853280), (2, 10426640), (4, 5213320), (5, 4170656), (7, 2979040), (8, 2606660), (10, 2085328), (14, 1489520), (16, 1303330), (20, 1042664), (28, 744760), (32, 651665), (35, 595808), (40, 521332), (43, 484960), (56, 372380), (70, 297904), (80, 260666), (86, 242480), (112, 186190), (140, 148952), (160, 130333), (172, 121240), (215, 96992), (224, 93095), (280, 74476), (301, 69280), (344, 60620), (430, 48496), (433, 48160), (560, 37238), (602, 34640), (688, 30310), (860, 24248), (866, 24080), (1120, 18619), (1204, 17320), (1376, 15155), (1505, 13856), (1720, 12124), (1732, 12040), (2165, 9632), (2408, 8660), (3010, 6928), (3031, 6880), (3440, 6062), (3464, 6020), (4330, 4816)]