19806075

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 38591280

約数和(自身を除く): 18785205

約数列:

[1, 3, 5, 9, 15, 19, 25, 41, 45, 57, 75, 95, 113, 123, 171, 205, 225, 285, 339, 369, 475, 565, 615, 779, 855, 1017, 1025, 1425, 1695, 1845, 2147, 2337, 2825, 3075, 3895, 4275, 4633, 5085, 6441, 7011, 8475, 9225, 10735, 11685, 13899, 19323, 19475, 23165, 25425, 32205, 35055, 41697, 53675, 58425, 69495, 88027, 96615, 115825, 161025, 175275, 208485, 264081, 347475, 440135, 483075, 792243, 1042425, 1320405, 2200675, 3961215, 6602025, 19806075]

約数ペア:

[(1, 19806075), (3, 6602025), (5, 3961215), (9, 2200675), (15, 1320405), (19, 1042425), (25, 792243), (41, 483075), (45, 440135), (57, 347475), (75, 264081), (95, 208485), (113, 175275), (123, 161025), (171, 115825), (205, 96615), (225, 88027), (285, 69495), (339, 58425), (369, 53675), (475, 41697), (565, 35055), (615, 32205), (779, 25425), (855, 23165), (1017, 19475), (1025, 19323), (1425, 13899), (1695, 11685), (1845, 10735), (2147, 9225), (2337, 8475), (2825, 7011), (3075, 6441), (3895, 5085), (4275, 4633)]