20451256640

素因数分解:

$2^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1\times {\mathrm{3391}}^1$

素因数の和:3856

約数の個数: 112

約数和(自身を含む): 49874448384

約数和(自身を除く): 29423191744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 160, 188, 235, 320, 376, 401, 470, 752, 802, 940, 1504, 1604, 1880, 2005, 3008, 3208, 3391, 3760, 4010, 6416, 6782, 7520, 8020, 12832, 13564, 15040, 16040, 16955, 18847, 25664, 27128, 32080, 33910, 37694, 54256, 64160, 67820, 75388, 94235, 108512, 128320, 135640, 150776, 159377, 188470, 217024, 271280, 301552, 318754, 376940, 542560, 603104, 637508, 753880, 796885, 1085120, 1206208, 1275016, 1359791, 1507760, 1593770, 2550032, 2719582, 3015520, 3187540, 5100064, 5439164, 6031040, 6375080, 6798955, 10200128, 10878328, 12750160, 13597910, 21756656, 25500320, 27195820, 43513312, 51000640, 54391640, 63910177, 87026624, 108783280, 127820354, 217566560, 255640708, 319550885, 435133120, 511281416, 639101770, 1022562832, 1278203540, 2045125664, 2556407080, 4090251328, 5112814160, 10225628320, 20451256640]

約数ペア:

[(1, 20451256640), (2, 10225628320), (4, 5112814160), (5, 4090251328), (8, 2556407080), (10, 2045125664), (16, 1278203540), (20, 1022562832), (32, 639101770), (40, 511281416), (47, 435133120), (64, 319550885), (80, 255640708), (94, 217566560), (160, 127820354), (188, 108783280), (235, 87026624), (320, 63910177), (376, 54391640), (401, 51000640), (470, 43513312), (752, 27195820), (802, 25500320), (940, 21756656), (1504, 13597910), (1604, 12750160), (1880, 10878328), (2005, 10200128), (3008, 6798955), (3208, 6375080), (3391, 6031040), (3760, 5439164), (4010, 5100064), (6416, 3187540), (6782, 3015520), (7520, 2719582), (8020, 2550032), (12832, 1593770), (13564, 1507760), (15040, 1359791), (16040, 1275016), (16955, 1206208), (18847, 1085120), (25664, 796885), (27128, 753880), (32080, 637508), (33910, 603104), (37694, 542560), (54256, 376940), (64160, 318754), (67820, 301552), (75388, 271280), (94235, 217024), (108512, 188470), (128320, 159377), (135640, 150776)]