19917345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 39075840

約数和(自身を除く): 19158495

約数列:

[1, 3, 5, 7, 15, 21, 29, 31, 35, 87, 93, 105, 145, 155, 203, 211, 217, 435, 465, 609, 633, 651, 899, 1015, 1055, 1085, 1477, 2697, 3045, 3165, 3255, 4431, 4495, 6119, 6293, 6541, 7385, 13485, 18357, 18879, 19623, 22155, 30595, 31465, 32705, 42833, 45787, 91785, 94395, 98115, 128499, 137361, 189689, 214165, 228935, 569067, 642495, 686805, 948445, 1327823, 2845335, 3983469, 6639115, 19917345]

約数ペア:

[(1, 19917345), (3, 6639115), (5, 3983469), (7, 2845335), (15, 1327823), (21, 948445), (29, 686805), (31, 642495), (35, 569067), (87, 228935), (93, 214165), (105, 189689), (145, 137361), (155, 128499), (203, 98115), (211, 94395), (217, 91785), (435, 45787), (465, 42833), (609, 32705), (633, 31465), (651, 30595), (899, 22155), (1015, 19623), (1055, 18879), (1085, 18357), (1477, 13485), (2697, 7385), (3045, 6541), (3165, 6293), (3255, 6119), (4431, 4495)]