399335552

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1307}}^1$

素因数の和:1370

約数の個数: 128

約数和(自身を含む): 1024634880

約数和(自身を除く): 625299328

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 62, 64, 77, 88, 112, 124, 128, 154, 176, 217, 224, 248, 308, 341, 352, 434, 448, 496, 616, 682, 704, 868, 896, 992, 1232, 1307, 1364, 1408, 1736, 1984, 2387, 2464, 2614, 2728, 3472, 3968, 4774, 4928, 5228, 5456, 6944, 9149, 9548, 9856, 10456, 10912, 13888, 14377, 18298, 19096, 20912, 21824, 27776, 28754, 36596, 38192, 40517, 41824, 43648, 57508, 73192, 76384, 81034, 83648, 100639, 115016, 146384, 152768, 162068, 167296, 201278, 230032, 283619, 292768, 305536, 324136, 402556, 445687, 460064, 567238, 585536, 648272, 805112, 891374, 920128, 1134476, 1171072, 1296544, 1610224, 1782748, 1840256, 2268952, 2593088, 3119809, 3220448, 3565496, 4537904, 5186176, 6239618, 6440896, 7130992, 9075808, 12479236, 12881792, 14261984, 18151616, 24958472, 28523968, 36303232, 49916944, 57047936, 99833888, 199667776, 399335552]

約数ペア:

[(1, 399335552), (2, 199667776), (4, 99833888), (7, 57047936), (8, 49916944), (11, 36303232), (14, 28523968), (16, 24958472), (22, 18151616), (28, 14261984), (31, 12881792), (32, 12479236), (44, 9075808), (56, 7130992), (62, 6440896), (64, 6239618), (77, 5186176), (88, 4537904), (112, 3565496), (124, 3220448), (128, 3119809), (154, 2593088), (176, 2268952), (217, 1840256), (224, 1782748), (248, 1610224), (308, 1296544), (341, 1171072), (352, 1134476), (434, 920128), (448, 891374), (496, 805112), (616, 648272), (682, 585536), (704, 567238), (868, 460064), (896, 445687), (992, 402556), (1232, 324136), (1307, 305536), (1364, 292768), (1408, 283619), (1736, 230032), (1984, 201278), (2387, 167296), (2464, 162068), (2614, 152768), (2728, 146384), (3472, 115016), (3968, 100639), (4774, 83648), (4928, 81034), (5228, 76384), (5456, 73192), (6944, 57508), (9149, 43648), (9548, 41824), (9856, 40517), (10456, 38192), (10912, 36596), (13888, 28754), (14377, 27776), (18298, 21824), (19096, 20912)]