18532917

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 30820608

約数和(自身を除く): 12287691

約数列:

[1, 3, 9, 13, 23, 39, 69, 71, 97, 117, 207, 213, 291, 299, 639, 873, 897, 923, 1261, 1633, 2231, 2691, 2769, 3783, 4899, 6693, 6887, 8307, 11349, 14697, 20079, 20661, 21229, 29003, 61983, 63687, 87009, 89531, 158401, 191061, 261027, 268593, 475203, 805779, 1425609, 2059213, 6177639, 18532917]

約数ペア:

[(1, 18532917), (3, 6177639), (9, 2059213), (13, 1425609), (23, 805779), (39, 475203), (69, 268593), (71, 261027), (97, 191061), (117, 158401), (207, 89531), (213, 87009), (291, 63687), (299, 61983), (639, 29003), (873, 21229), (897, 20661), (923, 20079), (1261, 14697), (1633, 11349), (2231, 8307), (2691, 6887), (2769, 6693), (3783, 4899)]