28681510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 64

約数和(自身を含む): 62705664

約数和(自身を除く): 34024154

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 647, 682, 715, 806, 1294, 1430, 1705, 2015, 3235, 3410, 4030, 4433, 6470, 7117, 8411, 8866, 14234, 16822, 20057, 22165, 35585, 40114, 42055, 44330, 71170, 84110, 92521, 100285, 185042, 200570, 220627, 260741, 441254, 462605, 521482, 925210, 1103135, 1303705, 2206270, 2607410, 2868151, 5736302, 14340755, 28681510]

約数ペア:

[(1, 28681510), (2, 14340755), (5, 5736302), (10, 2868151), (11, 2607410), (13, 2206270), (22, 1303705), (26, 1103135), (31, 925210), (55, 521482), (62, 462605), (65, 441254), (110, 260741), (130, 220627), (143, 200570), (155, 185042), (286, 100285), (310, 92521), (341, 84110), (403, 71170), (647, 44330), (682, 42055), (715, 40114), (806, 35585), (1294, 22165), (1430, 20057), (1705, 16822), (2015, 14234), (3235, 8866), (3410, 8411), (4030, 7117), (4433, 6470)]