251420416

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2437}}^1$

素因数の和:2497

約数の個数: 72

約数和(自身を含む): 558126464

約数和(自身を除く): 306706048

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, 1984, 2437, 3224, 3328, 3968, 4874, 6448, 7936, 9748, 12896, 19496, 25792, 31681, 38992, 51584, 63362, 75547, 77984, 103168, 126724, 151094, 155968, 253448, 302188, 311936, 506896, 604376, 623872, 982111, 1013792, 1208752, 1964222, 2027584, 2417504, 3928444, 4055168, 4835008, 7856888, 8110336, 9670016, 15713776, 19340032, 31427552, 62855104, 125710208, 251420416]

約数ペア:

[(1, 251420416), (2, 125710208), (4, 62855104), (8, 31427552), (13, 19340032), (16, 15713776), (26, 9670016), (31, 8110336), (32, 7856888), (52, 4835008), (62, 4055168), (64, 3928444), (104, 2417504), (124, 2027584), (128, 1964222), (208, 1208752), (248, 1013792), (256, 982111), (403, 623872), (416, 604376), (496, 506896), (806, 311936), (832, 302188), (992, 253448), (1612, 155968), (1664, 151094), (1984, 126724), (2437, 103168), (3224, 77984), (3328, 75547), (3968, 63362), (4874, 51584), (6448, 38992), (7936, 31681), (9748, 25792), (12896, 19496)]