31990016

素因数分解:

$2^8\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 68678400

約数和(自身を除く): 36688384

約数列:

[1, 2, 4, 8, 16, 29, 31, 32, 58, 62, 64, 116, 124, 128, 139, 232, 248, 256, 278, 464, 496, 556, 899, 928, 992, 1112, 1798, 1856, 1984, 2224, 3596, 3712, 3968, 4031, 4309, 4448, 7192, 7424, 7936, 8062, 8618, 8896, 14384, 16124, 17236, 17792, 28768, 32248, 34472, 35584, 57536, 64496, 68944, 115072, 124961, 128992, 137888, 230144, 249922, 257984, 275776, 499844, 515968, 551552, 999688, 1031936, 1103104, 1999376, 3998752, 7997504, 15995008, 31990016]

約数ペア:

[(1, 31990016), (2, 15995008), (4, 7997504), (8, 3998752), (16, 1999376), (29, 1103104), (31, 1031936), (32, 999688), (58, 551552), (62, 515968), (64, 499844), (116, 275776), (124, 257984), (128, 249922), (139, 230144), (232, 137888), (248, 128992), (256, 124961), (278, 115072), (464, 68944), (496, 64496), (556, 57536), (899, 35584), (928, 34472), (992, 32248), (1112, 28768), (1798, 17792), (1856, 17236), (1984, 16124), (2224, 14384), (3596, 8896), (3712, 8618), (3968, 8062), (4031, 7936), (4309, 7424), (4448, 7192)]