638148

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 1741824

約数和(自身を除く): 1103676

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 107, 142, 213, 214, 284, 321, 426, 428, 497, 642, 749, 852, 994, 1284, 1491, 1498, 1988, 2247, 2982, 2996, 4494, 5964, 7597, 8988, 15194, 22791, 30388, 45582, 53179, 91164, 106358, 159537, 212716, 319074, 638148]

約数ペア:

[(1, 638148), (2, 319074), (3, 212716), (4, 159537), (6, 106358), (7, 91164), (12, 53179), (14, 45582), (21, 30388), (28, 22791), (42, 15194), (71, 8988), (84, 7597), (107, 5964), (142, 4494), (213, 2996), (214, 2982), (284, 2247), (321, 1988), (426, 1498), (428, 1491), (497, 1284), (642, 994), (749, 852)]