161757440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9721}}^1$

素因数の和:9755

約数の個数: 72

約数和(自身を含む): 417307128

約数和(自身を除く): 255549688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 9721, 16640, 19442, 38884, 48605, 77768, 97210, 126373, 155536, 194420, 252746, 311072, 388840, 505492, 622144, 631865, 777680, 1010984, 1244288, 1263730, 1555360, 2021968, 2488576, 2527460, 3110720, 4043936, 5054920, 6221440, 8087872, 10109840, 12442880, 16175744, 20219680, 32351488, 40439360, 80878720, 161757440]

約数ペア:

[(1, 161757440), (2, 80878720), (4, 40439360), (5, 32351488), (8, 20219680), (10, 16175744), (13, 12442880), (16, 10109840), (20, 8087872), (26, 6221440), (32, 5054920), (40, 4043936), (52, 3110720), (64, 2527460), (65, 2488576), (80, 2021968), (104, 1555360), (128, 1263730), (130, 1244288), (160, 1010984), (208, 777680), (256, 631865), (260, 622144), (320, 505492), (416, 388840), (520, 311072), (640, 252746), (832, 194420), (1040, 155536), (1280, 126373), (1664, 97210), (2080, 77768), (3328, 48605), (4160, 38884), (8320, 19442), (9721, 16640)]