399621248

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:246

約数の個数: 128

約数和(自身を含む): 906608640

約数和(自身を除く): 506987392

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 61, 62, 64, 104, 122, 124, 127, 128, 208, 244, 248, 254, 403, 416, 488, 496, 508, 793, 806, 832, 976, 992, 1016, 1586, 1612, 1651, 1664, 1891, 1952, 1984, 2032, 3172, 3224, 3302, 3782, 3904, 3937, 3968, 4064, 6344, 6448, 6604, 7564, 7747, 7808, 7874, 8128, 12688, 12896, 13208, 15128, 15494, 15748, 16256, 24583, 25376, 25792, 26416, 30256, 30988, 31496, 49166, 50752, 51181, 51584, 52832, 60512, 61976, 62992, 98332, 100711, 101504, 102362, 105664, 121024, 123952, 125984, 196664, 201422, 204724, 211328, 240157, 242048, 247904, 251968, 393328, 402844, 409448, 480314, 495808, 503936, 786656, 805688, 818896, 960628, 991616, 1573312, 1611376, 1637792, 1921256, 3122041, 3146624, 3222752, 3275584, 3842512, 6244082, 6445504, 6551168, 7685024, 12488164, 12891008, 15370048, 24976328, 30740096, 49952656, 99905312, 199810624, 399621248]

約数ペア:

[(1, 399621248), (2, 199810624), (4, 99905312), (8, 49952656), (13, 30740096), (16, 24976328), (26, 15370048), (31, 12891008), (32, 12488164), (52, 7685024), (61, 6551168), (62, 6445504), (64, 6244082), (104, 3842512), (122, 3275584), (124, 3222752), (127, 3146624), (128, 3122041), (208, 1921256), (244, 1637792), (248, 1611376), (254, 1573312), (403, 991616), (416, 960628), (488, 818896), (496, 805688), (508, 786656), (793, 503936), (806, 495808), (832, 480314), (976, 409448), (992, 402844), (1016, 393328), (1586, 251968), (1612, 247904), (1651, 242048), (1664, 240157), (1891, 211328), (1952, 204724), (1984, 201422), (2032, 196664), (3172, 125984), (3224, 123952), (3302, 121024), (3782, 105664), (3904, 102362), (3937, 101504), (3968, 100711), (4064, 98332), (6344, 62992), (6448, 61976), (6604, 60512), (7564, 52832), (7747, 51584), (7808, 51181), (7874, 50752), (8128, 49166), (12688, 31496), (12896, 30988), (13208, 30256), (15128, 26416), (15494, 25792), (15748, 25376), (16256, 24583)]