20651180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 50561280

約数和(自身を除く): 29910100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 43, 44, 55, 59, 74, 86, 110, 118, 148, 172, 185, 215, 220, 236, 295, 370, 407, 430, 473, 590, 649, 740, 814, 860, 946, 1180, 1298, 1591, 1628, 1892, 2035, 2183, 2365, 2537, 2596, 3182, 3245, 4070, 4366, 4730, 5074, 6364, 6490, 7955, 8140, 8732, 9460, 10148, 10915, 12685, 12980, 15910, 17501, 21830, 24013, 25370, 27907, 31820, 35002, 43660, 48026, 50740, 55814, 70004, 87505, 93869, 96052, 111628, 120065, 139535, 175010, 187738, 240130, 279070, 350020, 375476, 469345, 480260, 558140, 938690, 1032559, 1877380, 2065118, 4130236, 5162795, 10325590, 20651180]

約数ペア:

[(1, 20651180), (2, 10325590), (4, 5162795), (5, 4130236), (10, 2065118), (11, 1877380), (20, 1032559), (22, 938690), (37, 558140), (43, 480260), (44, 469345), (55, 375476), (59, 350020), (74, 279070), (86, 240130), (110, 187738), (118, 175010), (148, 139535), (172, 120065), (185, 111628), (215, 96052), (220, 93869), (236, 87505), (295, 70004), (370, 55814), (407, 50740), (430, 48026), (473, 43660), (590, 35002), (649, 31820), (740, 27907), (814, 25370), (860, 24013), (946, 21830), (1180, 17501), (1298, 15910), (1591, 12980), (1628, 12685), (1892, 10915), (2035, 10148), (2183, 9460), (2365, 8732), (2537, 8140), (2596, 7955), (3182, 6490), (3245, 6364), (4070, 5074), (4366, 4730)]