21744315

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 19727685

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 47, 69, 115, 135, 141, 149, 207, 235, 345, 423, 447, 621, 705, 745, 1035, 1081, 1269, 1341, 2115, 2235, 3105, 3243, 3427, 4023, 5405, 6345, 6705, 7003, 9729, 10281, 16215, 17135, 20115, 21009, 29187, 30843, 35015, 48645, 51405, 63027, 92529, 105045, 145935, 154215, 161069, 189081, 315135, 462645, 483207, 805345, 945405, 1449621, 2416035, 4348863, 7248105, 21744315]

約数ペア:

[(1, 21744315), (3, 7248105), (5, 4348863), (9, 2416035), (15, 1449621), (23, 945405), (27, 805345), (45, 483207), (47, 462645), (69, 315135), (115, 189081), (135, 161069), (141, 154215), (149, 145935), (207, 105045), (235, 92529), (345, 63027), (423, 51405), (447, 48645), (621, 35015), (705, 30843), (745, 29187), (1035, 21009), (1081, 20115), (1269, 17135), (1341, 16215), (2115, 10281), (2235, 9729), (3105, 7003), (3243, 6705), (3427, 6345), (4023, 5405)]