20791305

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16948215

約数列:

[1, 3, 5, 9, 15, 41, 45, 59, 123, 177, 191, 205, 295, 369, 531, 573, 615, 885, 955, 1719, 1845, 2419, 2655, 2865, 7257, 7831, 8595, 11269, 12095, 21771, 23493, 33807, 36285, 39155, 56345, 70479, 101421, 108855, 117465, 169035, 352395, 462029, 507105, 1386087, 2310145, 4158261, 6930435, 20791305]

約数ペア:

[(1, 20791305), (3, 6930435), (5, 4158261), (9, 2310145), (15, 1386087), (41, 507105), (45, 462029), (59, 352395), (123, 169035), (177, 117465), (191, 108855), (205, 101421), (295, 70479), (369, 56345), (531, 39155), (573, 36285), (615, 33807), (885, 23493), (955, 21771), (1719, 12095), (1845, 11269), (2419, 8595), (2655, 7831), (2865, 7257)]