81003520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1217}}^1$

素因数の和:1255

約数の個数: 88

約数和(自身を含む): 209432664

約数和(自身を除く): 128429144

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, 512, 520, 640, 832, 1024, 1040, 1217, 1280, 1664, 2080, 2434, 2560, 3328, 4160, 4868, 5120, 6085, 6656, 8320, 9736, 12170, 13312, 15821, 16640, 19472, 24340, 31642, 33280, 38944, 48680, 63284, 66560, 77888, 79105, 97360, 126568, 155776, 158210, 194720, 253136, 311552, 316420, 389440, 506272, 623104, 632840, 778880, 1012544, 1246208, 1265680, 1557760, 2025088, 2531360, 3115520, 4050176, 5062720, 6231040, 8100352, 10125440, 16200704, 20250880, 40501760, 81003520]

約数ペア:

[(1, 81003520), (2, 40501760), (4, 20250880), (5, 16200704), (8, 10125440), (10, 8100352), (13, 6231040), (16, 5062720), (20, 4050176), (26, 3115520), (32, 2531360), (40, 2025088), (52, 1557760), (64, 1265680), (65, 1246208), (80, 1012544), (104, 778880), (128, 632840), (130, 623104), (160, 506272), (208, 389440), (256, 316420), (260, 311552), (320, 253136), (416, 194720), (512, 158210), (520, 155776), (640, 126568), (832, 97360), (1024, 79105), (1040, 77888), (1217, 66560), (1280, 63284), (1664, 48680), (2080, 38944), (2434, 33280), (2560, 31642), (3328, 24340), (4160, 19472), (4868, 16640), (5120, 15821), (6085, 13312), (6656, 12170), (8320, 9736)]