18288171

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 30551040

約数和(自身を除く): 12262869

約数列:

[1, 3, 9, 11, 31, 33, 59, 93, 99, 101, 177, 279, 303, 341, 531, 649, 909, 1023, 1111, 1829, 1947, 3069, 3131, 3333, 5487, 5841, 5959, 9393, 9999, 16461, 17877, 20119, 28179, 34441, 53631, 60357, 65549, 103323, 181071, 184729, 196647, 309969, 554187, 589941, 1662561, 2032019, 6096057, 18288171]

約数ペア:

[(1, 18288171), (3, 6096057), (9, 2032019), (11, 1662561), (31, 589941), (33, 554187), (59, 309969), (93, 196647), (99, 184729), (101, 181071), (177, 103323), (279, 65549), (303, 60357), (341, 53631), (531, 34441), (649, 28179), (909, 20119), (1023, 17877), (1111, 16461), (1829, 9999), (1947, 9393), (3069, 5959), (3131, 5841), (3333, 5487)]