205257855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{281}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 380090880

約数和(自身を除く): 174833025

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 233, 281, 285, 627, 699, 843, 1045, 1165, 1405, 2563, 3091, 3135, 3495, 4215, 4427, 5339, 7689, 9273, 12815, 13281, 15455, 16017, 22135, 26695, 38445, 46365, 48697, 58729, 65473, 66405, 80085, 146091, 176187, 196419, 243485, 293645, 327365, 720203, 730455, 880935, 982095, 1243987, 2160609, 3601015, 3731961, 6219935, 10803045, 13683857, 18659805, 41051571, 68419285, 205257855]

約数ペア:

[(1, 205257855), (3, 68419285), (5, 41051571), (11, 18659805), (15, 13683857), (19, 10803045), (33, 6219935), (55, 3731961), (57, 3601015), (95, 2160609), (165, 1243987), (209, 982095), (233, 880935), (281, 730455), (285, 720203), (627, 327365), (699, 293645), (843, 243485), (1045, 196419), (1165, 176187), (1405, 146091), (2563, 80085), (3091, 66405), (3135, 65473), (3495, 58729), (4215, 48697), (4427, 46365), (5339, 38445), (7689, 26695), (9273, 22135), (12815, 16017), (13281, 15455)]