18739136

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:349

約数の個数: 56

約数和(自身を含む): 40623744

約数和(自身を除く): 21884608

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 101, 104, 202, 208, 223, 404, 416, 446, 808, 832, 892, 1313, 1616, 1784, 2626, 2899, 3232, 3568, 5252, 5798, 6464, 7136, 10504, 11596, 14272, 21008, 22523, 23192, 42016, 45046, 46384, 84032, 90092, 92768, 180184, 185536, 292799, 360368, 585598, 720736, 1171196, 1441472, 2342392, 4684784, 9369568, 18739136]

約数ペア:

[(1, 18739136), (2, 9369568), (4, 4684784), (8, 2342392), (13, 1441472), (16, 1171196), (26, 720736), (32, 585598), (52, 360368), (64, 292799), (101, 185536), (104, 180184), (202, 92768), (208, 90092), (223, 84032), (404, 46384), (416, 45046), (446, 42016), (808, 23192), (832, 22523), (892, 21008), (1313, 14272), (1616, 11596), (1784, 10504), (2626, 7136), (2899, 6464), (3232, 5798), (3568, 5252)]