21183218

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 16141582

約数列:

[1, 2, 7, 14, 79, 107, 158, 179, 214, 358, 553, 749, 1106, 1253, 1498, 2506, 8453, 14141, 16906, 19153, 28282, 38306, 59171, 98987, 118342, 134071, 197974, 268142, 1513087, 3026174, 10591609, 21183218]

約数ペア:

[(1, 21183218), (2, 10591609), (7, 3026174), (14, 1513087), (79, 268142), (107, 197974), (158, 134071), (179, 118342), (214, 98987), (358, 59171), (553, 38306), (749, 28282), (1106, 19153), (1253, 16906), (1498, 14141), (2506, 8453)]