21156296

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 48833280

約数和(自身を除く): 27676984

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 71, 119, 136, 142, 238, 284, 313, 476, 497, 568, 626, 952, 994, 1207, 1252, 1988, 2191, 2414, 2504, 3976, 4382, 4828, 5321, 8449, 8764, 9656, 10642, 16898, 17528, 21284, 22223, 33796, 37247, 42568, 44446, 67592, 74494, 88892, 148988, 155561, 177784, 297976, 311122, 377791, 622244, 755582, 1244488, 1511164, 2644537, 3022328, 5289074, 10578148, 21156296]

約数ペア:

[(1, 21156296), (2, 10578148), (4, 5289074), (7, 3022328), (8, 2644537), (14, 1511164), (17, 1244488), (28, 755582), (34, 622244), (56, 377791), (68, 311122), (71, 297976), (119, 177784), (136, 155561), (142, 148988), (238, 88892), (284, 74494), (313, 67592), (476, 44446), (497, 42568), (568, 37247), (626, 33796), (952, 22223), (994, 21284), (1207, 17528), (1252, 16898), (1988, 10642), (2191, 9656), (2414, 8764), (2504, 8449), (3976, 5321), (4382, 4828)]