21314745

素因数分解:

$3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 39154752

約数和(自身を除く): 17840007

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 243, 265, 331, 405, 477, 795, 993, 1215, 1431, 1655, 2385, 2979, 4293, 4965, 7155, 8937, 12879, 14895, 17543, 21465, 26811, 44685, 52629, 64395, 80433, 87715, 134055, 157887, 263145, 402165, 473661, 789435, 1420983, 2368305, 4262949, 7104915, 21314745]

約数ペア:

[(1, 21314745), (3, 7104915), (5, 4262949), (9, 2368305), (15, 1420983), (27, 789435), (45, 473661), (53, 402165), (81, 263145), (135, 157887), (159, 134055), (243, 87715), (265, 80433), (331, 64395), (405, 52629), (477, 44685), (795, 26811), (993, 21465), (1215, 17543), (1431, 14895), (1655, 12879), (2385, 8937), (2979, 7155), (4293, 4965)]