81763360

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10429}}^1$

素因数の和:10458

約数の個数: 72

約数和(自身を含む): 224724780

約数和(自身を除く): 142961420

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10429, 20858, 41716, 52145, 73003, 83432, 104290, 146006, 166864, 208580, 292012, 333728, 365015, 417160, 511021, 584024, 730030, 834320, 1022042, 1168048, 1460060, 1668640, 2044084, 2336096, 2555105, 2920120, 4088168, 5110210, 5840240, 8176336, 10220420, 11680480, 16352672, 20440840, 40881680, 81763360]

約数ペア:

[(1, 81763360), (2, 40881680), (4, 20440840), (5, 16352672), (7, 11680480), (8, 10220420), (10, 8176336), (14, 5840240), (16, 5110210), (20, 4088168), (28, 2920120), (32, 2555105), (35, 2336096), (40, 2044084), (49, 1668640), (56, 1460060), (70, 1168048), (80, 1022042), (98, 834320), (112, 730030), (140, 584024), (160, 511021), (196, 417160), (224, 365015), (245, 333728), (280, 292012), (392, 208580), (490, 166864), (560, 146006), (784, 104290), (980, 83432), (1120, 73003), (1568, 52145), (1960, 41716), (3920, 20858), (7840, 10429)]