20756960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:496

約数の個数: 96

約数和(自身を含む): 57480192

約数和(自身を除く): 36723232

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, 431, 560, 602, 688, 860, 862, 1120, 1204, 1376, 1505, 1720, 1724, 2155, 2408, 3010, 3017, 3440, 3448, 4310, 4816, 6020, 6034, 6880, 6896, 8620, 9632, 12040, 12068, 13792, 15085, 17240, 18533, 24080, 24136, 30170, 34480, 37066, 48160, 48272, 60340, 68960, 74132, 92665, 96544, 120680, 129731, 148264, 185330, 241360, 259462, 296528, 370660, 482720, 518924, 593056, 648655, 741320, 1037848, 1297310, 1482640, 2075696, 2594620, 2965280, 4151392, 5189240, 10378480, 20756960]

約数ペア:

[(1, 20756960), (2, 10378480), (4, 5189240), (5, 4151392), (7, 2965280), (8, 2594620), (10, 2075696), (14, 1482640), (16, 1297310), (20, 1037848), (28, 741320), (32, 648655), (35, 593056), (40, 518924), (43, 482720), (56, 370660), (70, 296528), (80, 259462), (86, 241360), (112, 185330), (140, 148264), (160, 129731), (172, 120680), (215, 96544), (224, 92665), (280, 74132), (301, 68960), (344, 60340), (430, 48272), (431, 48160), (560, 37066), (602, 34480), (688, 30170), (860, 24136), (862, 24080), (1120, 18533), (1204, 17240), (1376, 15085), (1505, 13792), (1720, 12068), (1724, 12040), (2155, 9632), (2408, 8620), (3010, 6896), (3017, 6880), (3440, 6034), (3448, 6020), (4310, 4816)]