20040680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1231}}^1$

素因数の和:1290

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 30520600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1231, 1480, 1628, 2035, 2462, 3256, 4070, 4924, 6155, 8140, 9848, 12310, 13541, 16280, 24620, 27082, 45547, 49240, 54164, 67705, 91094, 108328, 135410, 182188, 227735, 270820, 364376, 455470, 501017, 541640, 910940, 1002034, 1821880, 2004068, 2505085, 4008136, 5010170, 10020340, 20040680]

約数ペア:

[(1, 20040680), (2, 10020340), (4, 5010170), (5, 4008136), (8, 2505085), (10, 2004068), (11, 1821880), (20, 1002034), (22, 910940), (37, 541640), (40, 501017), (44, 455470), (55, 364376), (74, 270820), (88, 227735), (110, 182188), (148, 135410), (185, 108328), (220, 91094), (296, 67705), (370, 54164), (407, 49240), (440, 45547), (740, 27082), (814, 24620), (1231, 16280), (1480, 13541), (1628, 12310), (2035, 9848), (2462, 8140), (3256, 6155), (4070, 4924)]