21574215

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:693

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 21971385

約数列:

[1, 3, 5, 9, 13, 15, 19, 27, 39, 45, 57, 65, 95, 117, 135, 171, 195, 247, 285, 351, 513, 585, 647, 741, 855, 1235, 1755, 1941, 2223, 2565, 3235, 3705, 5823, 6669, 8411, 9705, 11115, 12293, 17469, 25233, 29115, 33345, 36879, 42055, 61465, 75699, 87345, 110637, 126165, 159809, 184395, 227097, 331911, 378495, 479427, 553185, 799045, 1135485, 1438281, 1659555, 2397135, 4314843, 7191405, 21574215]

約数ペア:

[(1, 21574215), (3, 7191405), (5, 4314843), (9, 2397135), (13, 1659555), (15, 1438281), (19, 1135485), (27, 799045), (39, 553185), (45, 479427), (57, 378495), (65, 331911), (95, 227097), (117, 184395), (135, 159809), (171, 126165), (195, 110637), (247, 87345), (285, 75699), (351, 61465), (513, 42055), (585, 36879), (647, 33345), (741, 29115), (855, 25233), (1235, 17469), (1755, 12293), (1941, 11115), (2223, 9705), (2565, 8411), (3235, 6669), (3705, 5823)]