20101688720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{911}}^1\times {\mathrm{9511}}^1$

素因数の和:10464

約数の個数: 80

約数和(自身を含む): 48406187520

約数和(自身を除く): 28304498800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 911, 1160, 1822, 2320, 3644, 4555, 7288, 9110, 9511, 14576, 18220, 19022, 26419, 36440, 38044, 47555, 52838, 72880, 76088, 95110, 105676, 132095, 152176, 190220, 211352, 264190, 275819, 380440, 422704, 528380, 551638, 760880, 1056760, 1103276, 1379095, 2113520, 2206552, 2758190, 4413104, 5516380, 8664521, 11032760, 17329042, 22065520, 34658084, 43322605, 69316168, 86645210, 138632336, 173290420, 251271109, 346580840, 502542218, 693161680, 1005084436, 1256355545, 2010168872, 2512711090, 4020337744, 5025422180, 10050844360, 20101688720]

約数ペア:

[(1, 20101688720), (2, 10050844360), (4, 5025422180), (5, 4020337744), (8, 2512711090), (10, 2010168872), (16, 1256355545), (20, 1005084436), (29, 693161680), (40, 502542218), (58, 346580840), (80, 251271109), (116, 173290420), (145, 138632336), (232, 86645210), (290, 69316168), (464, 43322605), (580, 34658084), (911, 22065520), (1160, 17329042), (1822, 11032760), (2320, 8664521), (3644, 5516380), (4555, 4413104), (7288, 2758190), (9110, 2206552), (9511, 2113520), (14576, 1379095), (18220, 1103276), (19022, 1056760), (26419, 760880), (36440, 551638), (38044, 528380), (47555, 422704), (52838, 380440), (72880, 275819), (76088, 264190), (95110, 211352), (105676, 190220), (132095, 152176)]