20602890

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{991}}^1$

素因数の和:1025

約数の個数: 128

約数和(自身を含む): 68567040

約数和(自身を除く): 47964150

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 27, 30, 33, 35, 42, 45, 54, 55, 63, 66, 70, 77, 90, 99, 105, 110, 126, 135, 154, 165, 189, 198, 210, 231, 270, 297, 315, 330, 378, 385, 462, 495, 594, 630, 693, 770, 945, 990, 991, 1155, 1386, 1485, 1890, 1982, 2079, 2310, 2970, 2973, 3465, 4158, 4955, 5946, 6930, 6937, 8919, 9910, 10395, 10901, 13874, 14865, 17838, 20790, 20811, 21802, 26757, 29730, 32703, 34685, 41622, 44595, 53514, 54505, 62433, 65406, 69370, 76307, 89190, 98109, 104055, 109010, 124866, 133785, 152614, 163515, 187299, 196218, 208110, 228921, 267570, 294327, 312165, 327030, 374598, 381535, 457842, 490545, 588654, 624330, 686763, 763070, 936495, 981090, 1144605, 1373526, 1471635, 1872990, 2060289, 2289210, 2943270, 3433815, 4120578, 6867630, 10301445, 20602890]

約数ペア:

[(1, 20602890), (2, 10301445), (3, 6867630), (5, 4120578), (6, 3433815), (7, 2943270), (9, 2289210), (10, 2060289), (11, 1872990), (14, 1471635), (15, 1373526), (18, 1144605), (21, 981090), (22, 936495), (27, 763070), (30, 686763), (33, 624330), (35, 588654), (42, 490545), (45, 457842), (54, 381535), (55, 374598), (63, 327030), (66, 312165), (70, 294327), (77, 267570), (90, 228921), (99, 208110), (105, 196218), (110, 187299), (126, 163515), (135, 152614), (154, 133785), (165, 124866), (189, 109010), (198, 104055), (210, 98109), (231, 89190), (270, 76307), (297, 69370), (315, 65406), (330, 62433), (378, 54505), (385, 53514), (462, 44595), (495, 41622), (594, 34685), (630, 32703), (693, 29730), (770, 26757), (945, 21802), (990, 20811), (991, 20790), (1155, 17838), (1386, 14865), (1485, 13874), (1890, 10901), (1982, 10395), (2079, 9910), (2310, 8919), (2970, 6937), (2973, 6930), (3465, 5946), (4158, 4955)]