199217408

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1931}}^1$

素因数の和:1991

約数の個数: 72

約数和(自身を含む): 442288896

約数和(自身を除く): 243071488

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 256, 403, 416, 496, 806, 832, 992, 1612, 1664, 1931, 1984, 3224, 3328, 3862, 3968, 6448, 7724, 7936, 12896, 15448, 25103, 25792, 30896, 50206, 51584, 59861, 61792, 100412, 103168, 119722, 123584, 200824, 239444, 247168, 401648, 478888, 494336, 778193, 803296, 957776, 1556386, 1606592, 1915552, 3112772, 3213184, 3831104, 6225544, 6426368, 7662208, 12451088, 15324416, 24902176, 49804352, 99608704, 199217408]

約数ペア:

[(1, 199217408), (2, 99608704), (4, 49804352), (8, 24902176), (13, 15324416), (16, 12451088), (26, 7662208), (31, 6426368), (32, 6225544), (52, 3831104), (62, 3213184), (64, 3112772), (104, 1915552), (124, 1606592), (128, 1556386), (208, 957776), (248, 803296), (256, 778193), (403, 494336), (416, 478888), (496, 401648), (806, 247168), (832, 239444), (992, 200824), (1612, 123584), (1664, 119722), (1931, 103168), (1984, 100412), (3224, 61792), (3328, 59861), (3862, 51584), (3968, 50206), (6448, 30896), (7724, 25792), (7936, 25103), (12896, 15448)]