20145880120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{616459}}^1$

素因数の和:616532

約数の個数: 64

約数和(自身を含む): 48823632000

約数和(自身を除く): 28677751880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 4085, 6536, 8170, 16340, 32680, 616459, 1232918, 2465836, 3082295, 4931672, 6164590, 11712721, 12329180, 23425442, 24658360, 26507737, 46850884, 53015474, 58563605, 93701768, 106030948, 117127210, 132538685, 212061896, 234254420, 265077370, 468508840, 503647003, 530154740, 1007294006, 1060309480, 2014588012, 2518235015, 4029176024, 5036470030, 10072940060, 20145880120]

約数ペア:

[(1, 20145880120), (2, 10072940060), (4, 5036470030), (5, 4029176024), (8, 2518235015), (10, 2014588012), (19, 1060309480), (20, 1007294006), (38, 530154740), (40, 503647003), (43, 468508840), (76, 265077370), (86, 234254420), (95, 212061896), (152, 132538685), (172, 117127210), (190, 106030948), (215, 93701768), (344, 58563605), (380, 53015474), (430, 46850884), (760, 26507737), (817, 24658360), (860, 23425442), (1634, 12329180), (1720, 11712721), (3268, 6164590), (4085, 4931672), (6536, 3082295), (8170, 2465836), (16340, 1232918), (32680, 616459)]