21547755

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 41731200

約数和(自身を除く): 20183445

約数列:

[1, 3, 5, 9, 15, 17, 27, 41, 45, 51, 85, 123, 135, 153, 205, 229, 255, 369, 459, 615, 687, 697, 765, 1107, 1145, 1845, 2061, 2091, 2295, 3435, 3485, 3893, 5535, 6183, 6273, 9389, 10305, 10455, 11679, 18819, 19465, 28167, 30915, 31365, 35037, 46945, 58395, 84501, 94095, 105111, 140835, 159613, 175185, 253503, 422505, 478839, 525555, 798065, 1267515, 1436517, 2394195, 4309551, 7182585, 21547755]

約数ペア:

[(1, 21547755), (3, 7182585), (5, 4309551), (9, 2394195), (15, 1436517), (17, 1267515), (27, 798065), (41, 525555), (45, 478839), (51, 422505), (85, 253503), (123, 175185), (135, 159613), (153, 140835), (205, 105111), (229, 94095), (255, 84501), (369, 58395), (459, 46945), (615, 35037), (687, 31365), (697, 30915), (765, 28167), (1107, 19465), (1145, 18819), (1845, 11679), (2061, 10455), (2091, 10305), (2295, 9389), (3435, 6273), (3485, 6183), (3893, 5535)]