251497984

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:391

約数の個数: 80

約数和(自身を含む): 536215680

約数和(自身を除く): 284717696

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 103, 128, 152, 206, 251, 256, 304, 412, 502, 512, 608, 824, 1004, 1216, 1648, 1957, 2008, 2432, 3296, 3914, 4016, 4769, 4864, 6592, 7828, 8032, 9538, 9728, 13184, 15656, 16064, 19076, 25853, 26368, 31312, 32128, 38152, 51706, 52736, 62624, 64256, 76304, 103412, 125248, 128512, 152608, 206824, 250496, 305216, 413648, 491207, 500992, 610432, 827296, 982414, 1001984, 1220864, 1654592, 1964828, 2441728, 3309184, 3929656, 6618368, 7859312, 13236736, 15718624, 31437248, 62874496, 125748992, 251497984]

約数ペア:

[(1, 251497984), (2, 125748992), (4, 62874496), (8, 31437248), (16, 15718624), (19, 13236736), (32, 7859312), (38, 6618368), (64, 3929656), (76, 3309184), (103, 2441728), (128, 1964828), (152, 1654592), (206, 1220864), (251, 1001984), (256, 982414), (304, 827296), (412, 610432), (502, 500992), (512, 491207), (608, 413648), (824, 305216), (1004, 250496), (1216, 206824), (1648, 152608), (1957, 128512), (2008, 125248), (2432, 103412), (3296, 76304), (3914, 64256), (4016, 62624), (4769, 52736), (4864, 51706), (6592, 38152), (7828, 32128), (8032, 31312), (9538, 26368), (9728, 25853), (13184, 19076), (15656, 16064)]