20640606

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 49545216

約数和(自身を除く): 28904610

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 83, 93, 166, 186, 191, 217, 249, 382, 434, 498, 573, 581, 651, 1146, 1162, 1302, 1337, 1743, 2573, 2674, 3486, 4011, 5146, 5921, 7719, 8022, 11842, 15438, 15853, 17763, 18011, 31706, 35526, 36022, 41447, 47559, 54033, 82894, 95118, 108066, 110971, 124341, 221942, 248682, 332913, 491443, 665826, 982886, 1474329, 2948658, 3440101, 6880202, 10320303, 20640606]

約数ペア:

[(1, 20640606), (2, 10320303), (3, 6880202), (6, 3440101), (7, 2948658), (14, 1474329), (21, 982886), (31, 665826), (42, 491443), (62, 332913), (83, 248682), (93, 221942), (166, 124341), (186, 110971), (191, 108066), (217, 95118), (249, 82894), (382, 54033), (434, 47559), (498, 41447), (573, 36022), (581, 35526), (651, 31706), (1146, 18011), (1162, 17763), (1302, 15853), (1337, 15438), (1743, 11842), (2573, 8022), (2674, 7719), (3486, 5921), (4011, 5146)]