21458944

素因数分解:

$2^{12}\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 78

約数和(自身を含む): 47966496

約数和(自身を除く): 26507552

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 169, 208, 248, 256, 338, 403, 416, 496, 512, 676, 806, 832, 992, 1024, 1352, 1612, 1664, 1984, 2048, 2704, 3224, 3328, 3968, 4096, 5239, 5408, 6448, 6656, 7936, 10478, 10816, 12896, 13312, 15872, 20956, 21632, 25792, 26624, 31744, 41912, 43264, 51584, 53248, 63488, 83824, 86528, 103168, 126976, 167648, 173056, 206336, 335296, 346112, 412672, 670592, 692224, 825344, 1341184, 1650688, 2682368, 5364736, 10729472, 21458944]

約数ペア:

[(1, 21458944), (2, 10729472), (4, 5364736), (8, 2682368), (13, 1650688), (16, 1341184), (26, 825344), (31, 692224), (32, 670592), (52, 412672), (62, 346112), (64, 335296), (104, 206336), (124, 173056), (128, 167648), (169, 126976), (208, 103168), (248, 86528), (256, 83824), (338, 63488), (403, 53248), (416, 51584), (496, 43264), (512, 41912), (676, 31744), (806, 26624), (832, 25792), (992, 21632), (1024, 20956), (1352, 15872), (1612, 13312), (1664, 12896), (1984, 10816), (2048, 10478), (2704, 7936), (3224, 6656), (3328, 6448), (3968, 5408), (4096, 5239)]