21263235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6983}}^1$

素因数の和:7027

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 18964605

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6983, 20949, 34915, 48881, 104745, 146643, 202507, 244405, 607521, 733215, 1012535, 1417549, 3037605, 4252647, 7087745, 21263235]

約数ペア:

[(1, 21263235), (3, 7087745), (5, 4252647), (7, 3037605), (15, 1417549), (21, 1012535), (29, 733215), (35, 607521), (87, 244405), (105, 202507), (145, 146643), (203, 104745), (435, 48881), (609, 34915), (1015, 20949), (3045, 6983)]