20168290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 20888990

約数列:

[1, 2, 5, 10, 17, 31, 34, 43, 62, 85, 86, 89, 155, 170, 178, 215, 310, 430, 445, 527, 731, 890, 1054, 1333, 1462, 1513, 2635, 2666, 2759, 3026, 3655, 3827, 5270, 5518, 6665, 7310, 7565, 7654, 13330, 13795, 15130, 19135, 22661, 27590, 38270, 45322, 46903, 65059, 93806, 113305, 118637, 130118, 226610, 234515, 237274, 325295, 469030, 593185, 650590, 1186370, 2016829, 4033658, 10084145, 20168290]

約数ペア:

[(1, 20168290), (2, 10084145), (5, 4033658), (10, 2016829), (17, 1186370), (31, 650590), (34, 593185), (43, 469030), (62, 325295), (85, 237274), (86, 234515), (89, 226610), (155, 130118), (170, 118637), (178, 113305), (215, 93806), (310, 65059), (430, 46903), (445, 45322), (527, 38270), (731, 27590), (890, 22661), (1054, 19135), (1333, 15130), (1462, 13795), (1513, 13330), (2635, 7654), (2666, 7565), (2759, 7310), (3026, 6665), (3655, 5518), (3827, 5270)]