639185920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{127}}^1\times {\mathrm{983}}^1$

素因数の和:1135

約数の個数: 88

約数和(自身を含む): 1546942464

約数和(自身を除く): 907756544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 512, 635, 640, 983, 1016, 1024, 1270, 1280, 1966, 2032, 2540, 2560, 3932, 4064, 4915, 5080, 5120, 7864, 8128, 9830, 10160, 15728, 16256, 19660, 20320, 31456, 32512, 39320, 40640, 62912, 65024, 78640, 81280, 124841, 125824, 130048, 157280, 162560, 249682, 251648, 314560, 325120, 499364, 503296, 624205, 629120, 650240, 998728, 1006592, 1248410, 1258240, 1997456, 2496820, 2516480, 3994912, 4993640, 5032960, 7989824, 9987280, 15979648, 19974560, 31959296, 39949120, 63918592, 79898240, 127837184, 159796480, 319592960, 639185920]

約数ペア:

[(1, 639185920), (2, 319592960), (4, 159796480), (5, 127837184), (8, 79898240), (10, 63918592), (16, 39949120), (20, 31959296), (32, 19974560), (40, 15979648), (64, 9987280), (80, 7989824), (127, 5032960), (128, 4993640), (160, 3994912), (254, 2516480), (256, 2496820), (320, 1997456), (508, 1258240), (512, 1248410), (635, 1006592), (640, 998728), (983, 650240), (1016, 629120), (1024, 624205), (1270, 503296), (1280, 499364), (1966, 325120), (2032, 314560), (2540, 251648), (2560, 249682), (3932, 162560), (4064, 157280), (4915, 130048), (5080, 125824), (5120, 124841), (7864, 81280), (8128, 78640), (9830, 65024), (10160, 62912), (15728, 40640), (16256, 39320), (19660, 32512), (20320, 31456)]