21471615

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:805

約数の個数: 64

約数和(自身を含む): 43891200

約数和(自身を除く): 22419585

約数列:

[1, 3, 5, 9, 11, 15, 19, 27, 33, 45, 55, 57, 95, 99, 135, 165, 171, 209, 285, 297, 495, 513, 627, 761, 855, 1045, 1485, 1881, 2283, 2565, 3135, 3805, 5643, 6849, 8371, 9405, 11415, 14459, 20547, 25113, 28215, 34245, 41855, 43377, 72295, 75339, 102735, 125565, 130131, 159049, 216885, 226017, 376695, 390393, 477147, 650655, 795245, 1130085, 1431441, 1951965, 2385735, 4294323, 7157205, 21471615]

約数ペア:

[(1, 21471615), (3, 7157205), (5, 4294323), (9, 2385735), (11, 1951965), (15, 1431441), (19, 1130085), (27, 795245), (33, 650655), (45, 477147), (55, 390393), (57, 376695), (95, 226017), (99, 216885), (135, 159049), (165, 130131), (171, 125565), (209, 102735), (285, 75339), (297, 72295), (495, 43377), (513, 41855), (627, 34245), (761, 28215), (855, 25113), (1045, 20547), (1485, 14459), (1881, 11415), (2283, 9405), (2565, 8371), (3135, 6849), (3805, 5643)]