18399771

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 13856229

約数列:

[1, 3, 9, 13, 19, 27, 31, 39, 57, 89, 93, 117, 171, 247, 267, 279, 351, 403, 513, 589, 741, 801, 837, 1157, 1209, 1691, 1767, 2223, 2403, 2759, 3471, 3627, 5073, 5301, 6669, 7657, 8277, 10413, 10881, 15219, 15903, 21983, 22971, 24831, 31239, 35867, 45657, 52421, 65949, 68913, 74493, 107601, 157263, 197847, 206739, 322803, 471789, 593541, 681473, 968409, 1415367, 2044419, 6133257, 18399771]

約数ペア:

[(1, 18399771), (3, 6133257), (9, 2044419), (13, 1415367), (19, 968409), (27, 681473), (31, 593541), (39, 471789), (57, 322803), (89, 206739), (93, 197847), (117, 157263), (171, 107601), (247, 74493), (267, 68913), (279, 65949), (351, 52421), (403, 45657), (513, 35867), (589, 31239), (741, 24831), (801, 22971), (837, 21983), (1157, 15903), (1209, 15219), (1691, 10881), (1767, 10413), (2223, 8277), (2403, 7657), (2759, 6669), (3471, 5301), (3627, 5073)]